1370s

The 1370s was a decade of the Julian Calendar which began on January 1, 1370, and ended on December 31, 1379.

Events

January–December

• February 18 – The Battle of Rudau is fought between the Teutonic Knights and the Grand Duchy of Lithuania near Rudau village, north of Königsberg (now Melnikovo village in the Kaliningrad oblast). According to the Teutonic chronicler Wigand of Marburg and the Livonian chronicle of Hermann de Wartberge, the Lithuanians suffer a great defeat.
• April 9 – Timur becomes first Amir of the Timurid Empire, following the Siege of Balkh which establishes his rule over the Chagatai Khanate, completing his conquest of Central Asia and parts of Persia.
• May 24 – The Treaty of Stralsund ends the war between Denmark and the Hanseatic League.
• September 19 – Hundred Years' War: Siege of Limoges – The English led by Edward the Black Prince retake the city from the French by storm with wide destruction, effectively ending the Limoges enamel industry.
• October 20 – Philip of Anjou, Titular Emperor of Constantinople, marries as his second wife Elizabeth of Slavonia (daughter of Stephen of Anjou and Margaret of Bavaria).
• November 5 – Casimir III the Great, king of Poland, dies as the result of a hunting accident, and is succeeded jointly by his sister, Elizabeth of Kujavia, and her son, Louis I of Hungary, beginning the rule of the country by the Capet-Anjou family.
• November 15 – Trần Nghệ Tông deposes Dương Nhật Lễ as emperor of Đại Việt, modern-day Vietnam.
• December 4 – Hundred Years' War: Battle of Pontvallain – A French army under Bertrand du Guesclin heavily defeats an English force in surprise attacks in northwest France.
• December 20 – Pope Gregory XI succeeds Pope Urban V, as the 201st pope.

Date unknown

• For the second time since 1368, the Grand Duchy of Moscow attacks Tver, which again counter-attacks, with the aid of the Grand Duchy of Lithuania and the Blue Horde.
• Khun Luang Pa-Ngua, ruler of Suphanburi, marches and usurps the throne of the Ayutthaya Kingdom.
• The city of Xi'an in Ming dynasty China is given a new defensive city wall.
• Hugues Aubriot begins construction of the fortress of the Bastille in Paris.
• The steel crossbow is first used as a weapon of war.

January–December

• January – Edward the Black Prince, gives up the administration of Aquitaine and returns to England, because of his poor health and heavy debts.
• February 17 – Rival brothers Ivan Sratsimir and Ivan Shishman become co-Emperors of Bulgaria after the death of their father, Ivan Alexander. Bulgaria is weakened by the split.
• February 22 – Robert II becomes the first Stuart king of Scotland, after the death of his uncle, David II.
• March 28 – The London Charterhouse, a Carthusian monastery, is founded in Aldersgate.
• April 9 – Emperor Go-En'yu of Japan succeeds Emperor Go-Kōgon of Japan, becoming the 5th and last Emperor of the Northern Court.
• August 22 – Battle of Baesweiler: Brabant is unexpectedly defeated by the Duchy of Jülich.
• September 21 – John of Gaunt, son of King Edward III of England, marries Constance of Castile, daughter of King Pedro of Castile, giving John a claim to the throne of Castile.
• September 26 – Battle of Maritsa: Most of the nobility in Serbia are killed by the Ottomans.
• December – Lazar succeeds his distant cousin, Stefan Uroš V, as ruler of Serbia, but declines the title of Tsar.

Date unknown

• The first widely accepted historical reference is made to playing cards (in Spain).
• Polish priest Andrzej Jastrzębiec becomes the first bishop of Siret, thus bringing Catholicism to Moldavia.
• Zhao Bing Fa becomes King of Mong Mao (in modern-day south China/north Myanmar) after the death of his father, Si Kefa.
• Kalamegha claims the vacant title of King of Cambodia after the power of the Thai invaders from Ayutthaya begins to weaken. The Ayutthayans are finally expelled in 1375.
• Byzantine co-emperor John V Palaiologos pledges loyalty to the Ottoman Empire, to prevent the Turks from invading Constantinople.
• The Hongwu Emperor of the Ming dynasty in China introduces the census registration system of lijia, or the hundreds-and-tithing system, throughout the Yangzi Valley. This system groups households into units of ten and groups of one hundred, whereupon their capacities for paying taxes and providing the state with corvée labor service can be assessed. The system becomes fully operational in 1381, when it counts 59,873,305 people living in China (the historian Timothy Brook asserts that the number was much higher, somewhere between 65 million and 75 million).

January–December

• March 12 – Saint Bridget sets out on a pilgrimage to the Holy Land, staying in Cyprus until May 12. In August, she is in Bethlehem where she sees a vision of Jesus' birth. In September, she sets sail for Naples, where she arrives in December.
• May – Owain Lawgoch makes a second attempt to take the throne of Wales, sailing with French support from Harfleur. Whilst attacking the island of Guernsey, he abandons the invasion in order to fight for France at La Rochelle.
• June 22 – Battle of La Rochelle: The French and the Castilians defeat the English. The French gain control of the English Channel for the first time since 1340.
• July 10 – The Treaty of Tagilde is signed between Ferdinand I of Portugal and representatives of John of Gaunt of England, marking the beginning of the Anglo-Portuguese Alliance, which remains in effect into the 21st century.
• November 9 – Trần Duệ Tông succeeds his brother Trần Nghệ Tông as King of Vietnam.

Date unknown

• Encounter of Sintra: Twenty Portuguese knights rout four hundred Castilian infantrymen of the country.
• Peace is declared between the Kingdom of Sicily and the Kingdom of Naples.
• The Kingdom of Chūzan (in modern-day southern Japan) enters tributary relations with Ming dynasty China.
• Four-year-old Muhammad as-Said succeeds his father, Abu l-Fariz Abdul Aziz I, as Marinid Sultan of Morocco.
• Newaya Maryam succeeds his father, Newaya Krestos, as ruler of Ethiopia.
• The city of Aachen, Germany, begins adding a Roman numeral Anno Domini date to a few of its coins, the first city in the world to do so.

January–December

• March 24 – The Treaty of Santarém is signed between Ferdinand I of Portugal and Henry II of Castile, ending the second war between the two countries.
• April 28 – Hundred Years' War: The French re-capture most of Brittany from the English, but are unable to take Brest.
• May 13 – English anchoress Dame Julian of Norwich receives the sixteen Revelations of Divine Love.
• June 16 – The Anglo-Portuguese Treaty is signed in London, and is the oldest active treaty in the world.
• August – Hundred Years' War: John of Gaunt launches a new invasion of France.
• November? – Philip II, Prince of Taranto hands over the rule of Achaea (modern-day southern Greece) to his cousin, Joanna I of Naples.

Date unknown

• Louis I of Hungary takes Severin again, but the Vlachs will recover it in 1376–1377.
• Byzantine co-emperor Andronikos IV Palaiologos rebels against his father, John V Palaiologos, for agreeing to let Constantinople become a vassal of the Ottoman Empire. After the rebellion fails, Ottoman Emperor Murad I commands John V Palaiologos to blind his son.
• Constantine IV, ruler of the Armenian Kingdom of Cilicia (modern-day southern Turkey), is assassinated; he is succeeded by his distant cousin Leo V.
• The death of Sultan Muhammad III ibn Abd al-Aziz begins a period of political instability in Morocco.
• The city of Phnom Penh (modern-day capital city of Cambodia) is founded.
• Bristol is made a county corporate, the first town in the Kingdom of England outside London to be granted this status.
• A city wall is built around Lisbon, Portugal to resist invasion by Castile.
• Merton College Library is built in Oxford, England.
• The Adina Mosque is built in Bengal.
• The Chinese emperor of the Ming dynasty, the Hongwu Emperor, suspends the traditional civil service examination system after complaining that the 120 new jinshi degree-holders are too incompetent to hold office; he instead relies solely upon a system of recommendations, until the civil service exams are reinstated in 1384.

January–December

• April 23 – In recognition of his services, Edward III of England grants the English writer Geoffrey Chaucer a gallon of wine a day, for the rest of his life.
• June 24 – The illness dancing mania begins in Aix-la-Chapelle (Aachen), possibly due to ergotism.
• October 27 – King Gongmin of Goryeo is assassinated and succeeded by U of Goryeo on the throne of Goryeo (in modern-day Korea).
• November 25 – James of Baux succeeds his uncle, Philip II, as Prince of Taranto (modern-day eastern Italy) and titular ruler of the Latin Empire (northern Greece and western Turkey).

Date unknown

• Rao Biram Dev succeeds Rao Kanhadev as ruler of Marwar (the modern-day Jodhpur district of India).
• Shaikh Hasan Jalayir succeeds his father, Shaykh Uways Jalayir, as ruler of the Jalayirid Sultanate in modern-day Iraq and western Iran. Hasan proves to be an unpopular ruler and is executed on October 9 and succeeded by his brother, Shaikh Hussain Jalayir.
• Musa II succeeds his father, Mari Djata II, as Mansa of the Mali Empire (modern-day Mali and Senegal).
• Robert de Juilly succeeds Raymond Berenger as Grand Master of the Knights Hospitaller.
• Princes from the Kingdom of Granada choose Abu al-Abbas Ahmad to succeed Muhammad as-Said, as Sultan of the Marinid Empire in Morocco. The Empire is split into the Kingdom of Fez and the Kingdom of Marrakesh.
• A form of the Great Plague returns to Europe.
• The Château de Compiègne royal residence is built in France.

January–December

• April 14 – The Mamluks from Egypt complete their conquest of the Armenian Kingdom of Cilicia. Levon V Lusignan of Armenia is imprisoned for several years in Cairo, until a ransom is paid by King John I of Castile.
• April 21 – Mujahid Shah succeeds his father, Mohammed Shah I, as ruler of the Bahmani Sultanate in the Deccan Plateau of southern India.
• June 18 – The future King John I of Castile marries Eleanor of Aragon.
• June 27 – Hundred Years' War: The English, weakened by the plague, lose so much ground to the French that they agree to sign the Treaty of Bruges, leaving them with only the coastal towns of Calais, Bordeaux and Bayonne.
• October 24 – Margaret I of Denmark becomes Regent of Denmark after the death of her father, Valdemar IV.

Date unknown

• The Grand Duchy of Moscow and Tver sign a truce. Tver agrees to help Moscow fight the Blue Horde.
• Presumed death of Tenoch, ruler of the Mexica; he is succeeded by Acamapichtli who becomes first tlatoani (ruler) of the Aztecs of Tenochtitlan and founder of the Aztec imperial dynasty.
• Petru succeeds as Voivode (ruler) of Moldavia (modern-day Moldova & eastern Romania). He is the first ruler from the dynastic House of Bogdan.
• Coluccio Salutati is appointed Chancellor of Florence.
• The Russian town of Kostroma is destroyed by the ushkuynik pirates from Novgorod.
• Heirin-ji Temple is founded near Tokyo.
• In Nanjing, capital of Ming dynasty China, a bureau secretary of the Ministry of Justice, Ru Taisu, sends a 17,000 character-long memorial to the throne, to be read aloud to the Hongwu Emperor. By the 16,370th character, the emperor has been offended by several passages, and has Ru Taisu summoned to court and flogged for the perceived insult. The next day, having had the remaining characters read to him, he likes four of Ru's recommendations, and instates these in reforms. Ru is nevertheless castigated for having forced the emperor to hear thousands of characters before getting to the part with true substance. The last 500 characters are elevated in court as the model-type memorial that all officials should aspire to create while writing their own.
• Approximate date – Battle of Gardiki: The Principality of Achaea defeats the Despotate of the Morea.

1376

• March – The peace treaty between England and France is extended until April, 1377.
• March 31 – Pope Gregory XI excommunicates all members of the government of Florence, and places the city under an interdict.
• April 28 – The Good Parliament begins in England (so called because its members attempt to reform the corrupt Royal Council).
• May 3 – Olav IV Haakonsson is elected King Oluf II of Denmark, following the death of his grandfather, Valdemar IV, in 1375.
• June – Catherine of Siena visits Pope Gregory XI in Avignon, to attempt to persuade him to make peace with Florence, and move the Papacy back to Rome.
• June 7 – The dying Prince Edward of Wales summons his father, Edward III, and brother, John of Gaunt, and makes them swear to uphold the claim to the throne of his son Richard; Edward is the first "English" Prince of Wales not to become King of England.
• July 10 – The Good Parliament is dissolved (at this time, it is the longest Parliament to have sat in England).
• August 12 – With the help of the Genoese, Byzantine co-emperor Andronicus IV Palaeologus invades Constantinople and dethrones his father, John V Palaeologus, as co-emperor. John V Palaeologus is taken prisoner.
• September – John of Gaunt summons religious reformer John Wyclif to appear before the Royal Council.
• November 20 – Richard of Bordeaux, son of the Black Prince, is created Prince of Wales in succession to his father.
• December 25 – John of Gaunt presents his nephew, Richard of Bordeaux, to the feudatories of the realm and swears to uphold Richard's right to succeed Edward III.
• Unknown date – Acamapichtli becomes the first tlatoani of Tenochtitlan.

January–June

• January 17 – Pope Gregory XI moves the papacy back from Avignon to Rome.
• January 27 – The Bad Parliament begins sitting in England. Influenced by John of Gaunt, 1st Duke of Lancaster, it undoes the work done by the Good Parliament, the previous year, to reduce corruption in the Royal Council. It also introduces a poll tax.
• January – On the 24th day of the first lunar month of the year Dinh Ty, Tran Due Tong, Emperor of Đại Việt (Vietnam), is killed in the Battle of Đồ Bàn.
• February 24 – Harihara II succeeds Bukka Raya I, as ruler of the Vijayanagara Empire at its capital, Vijayanagara (now Hampi in Karnataka state in southern India.
• February – The Pope's representative in northern Italy, Robert of Geneva (the future antipope Clement VII), pillages Cesena, and 4,000 antipapal rebels are massacred.
• March 2 – The Bad Parliament dissolves; the first Speaker of the House of Commons of England is appointed.
• March 13 – At Thang Long, capital of Dai Viet (now Hanoi, capital of the Republic of Vietnam), Tran Phe De succeeds his late father, Tran Due Tong as the Emperor of Dai Viet. However, the real power remains with Nghe Tong, the regent for Phe De.
• May 22 – Pope Gregory XI issues five Bulls condemning the opinion of John Wycliffe, that Catholic priests should live in poverty, like the twelve disciples of Jesus.
• May
  • Continuous riots in Rome induce Pope Gregory XI to move temporarily back to Avignon.
  • Władysław II Jagiełło succeeds his father, Algirdas, as Grand Duke of Lithuania. Jagiello removes his uncle, Kęstutis, as co-ruler.
• June 24 – The Caroline War, which had been fought for six years from 1369 until the Treaty of Bruges on June 27, 1375, resumes between the kingdoms of England and France as the treaty expires. The war, a dispute over the control of Aquitaine, will last until 1389.

July–December

• July 16 – Richard II, the 10-year-old grandson of Edward III, is crowned king of England. A minority government is established, and a series of continual councils rule on his behalf until 1381.
• July 27 – Fourteen-year-old Maria of Sicily succeeds her father, Frederick the Simple.
• August 2 – Battle on Pyana River: The Russians are defeated, while their commander drowns in the river.
• August – The Hongwu Emperor of the Ming dynasty of China scraps the Office of Reports Inspection (established in 1370) for a new Office of Transmission, in his efforts to create a more efficient communicatory system in the empire. A month before this he noted that anyone could send memorials to the throne; commoners often did, although the only times their petitions were read aloud to the emperor were when they called for the impeachment of local officials who were not up to par with their official duties.
• October 13 – Richard II of England's first parliament meets.
• October 26 – Tvrtko I of Bosnia is crowned.

Date unknown

• Sayf ad-Din Barquq leads a revolt against the Mamluk Sultan of Egypt, Alah-ad-Din Ali.
• A rebellion against the Majapahit Empire is quashed in Sumatra in what is now Indonesia.
• Informed that Khan Urus of the White Horde has died, Timur of the Timurid Empire sends Tokhtamysh to take the Horde throne, but is defeated by Urus' son, Timur Malik.
• Radu I succeeds Vladislav I as Prince of Wallachia in what is now southern Romania.
• King U of Goryeo adopts the Ming calendar and begs to be invested by the Hongwu Emperor.
• The Trezzo sull'Adda Bridge is completed in Lombardy, and becomes the longest single-arch bridge in the world to be built for four centuries.
• A sermon by a German monk states "the game of cards has come to us this year", and prohibitions against cards are issued by Prince John of Castile, and the cities of Florence and Basel.

January–March

January 6: The Banquet of the Three Kings is hosted in Paris.

• January 6 – At the Great Hall of the Conciergerie in Paris, King Charles V of France hosts the Banquet of the Three Kings with his uncle, Charles IV, Holy Roman Emperor and the Emperor's son, Wenzel the Idle, King of the Romans as his guests (along with 800 German and French knights), to celebrate the friendship between the nations. The banquet, held on the day of the Feast of the Epiphany, has three courses, with 10 dishes in each course.
• January 13 – Balša II succeeds his brother, Durađ I, as ruler of Lower Zeta in what is now Montenegro.
• January 14 – King Richard II opens the Irish Parliament for the first time since the death of his father, King Edward III, a year earlier.
• February 6 – King Charles V of France is widowed when his queen consort, Joanna dies at age 40, two days after giving birth to their last child, Catherine. Against medical advice, Queen Joanna had taken a hot bath in order to induce labor.
• February 12 – Alexius, Metropolitan of Kiev and spiritual leader of the Russian Orthodox Church since 1354, dies of old age and his designated successor, Cyprian, Metropolitan of Lithuania, attempts to become the new leader. However, the Grand Prince of Moscow, Dmitry Donskoy, denies Cyprian permission and appoints Pimen, Metropolitan of Kiev as successor to Alexius.
• February 19 – In England, John Wycliffe, who has been trying to promote ideas for Catholic reform and has published a tract outlining his theses, appears at the Church of St. Paul before a group of bishops headed by the Archbishop of Canterbury, Simon of Sudbury, to defend his actions. With a citation having directed him to appear "on the thirtieth court-day" after receipt, Wycliffe arrives before the bishops to proceed with trial, but proceedings are halted when Sir Lewis Clifford, dispatched by Joan of Kent, Princess of Wales, acting as the regent for her son, King Richard II the Kingdom, directs that the bishops are "not to presume to determine anything against John Wycliffe. According to a chronicler, "Struck with terror, they at once abandoned the business of their meeting," but they subsequently order Wycliffe to appear at Lambeth in March.
• March 27 – Pope Gregory XI dies at the Vatican in Rome after a little more than seven years as leader of the Roman Catholic Church, and shortly after moving the church leadership back to Rome from the French city of Avignon. Officials of Rome begin a campaign of intimidation to prevent the Roman Catholic cardinals, a majority of whom are French, from electing a French cardinal as Gregory's successor.

April–June

• April 9 – Following the death of Pope Gregory XI, and riots in Rome calling for a Roman pope, the cardinals, who are mostly French, meet in a papal conclave and elect an Italian from Naples, Bartolomeo Prignano, Archbishop of Bari, as the 202nd Pope. Prignano takes the regnal name Pope Urban VI, and is the last Pope of the Roman Catholic Church to have been elected from outside of the College of Cardinals. The French cardinals then flee from Rome before the populace learns that a non-Roman was picked, and return to Avignon, beginning the Western Schism, a 39-year period where rival popes are selected at Avignon and Rome.
• April 16 – Mujahid Shah, ruler of the Bahmani Sultanate in what is now the Karnataka state in southern India, is assassinated by his uncle, Da'ud Shah, while traveling between Adoni and Kulbarga. Da'ud and three accomplices enter Mujahid's tent and stab him to death, after which Da'ud declares himself to be the new Sultan of Bahmani.
• April 18 – The coronation of Pope Urban VI takes place in Rome on Easter Sunday.
• May 21 – After only five weeks as Sultan of Bahmani in India, Da'ud Shah is assassinated while praying in the grand mosque at the capital, Kalaburagi. Da'ud Shah is succeeded by one of his nephews, Mahmud Shah.
• May 26 – Uskhal Khan Tögüs Temür succeeds his father, Biligtü Khan Ayushiridara, as ruler of the Northern Yuan dynasty in Mongolia.
• May 30 – The War of Chioggia begins on the Italian peninsula between the navies of the Republic of Venice and the Republic of Genoa, with a surprise attack on 11 Genoese galleys at Capo d'Anzio by a 10-galley fleet led by Venetian Admiral Vettor Pisani. Venice captures five of the Genoese ships and takes their crews as prisoners of war, including the Genoese admiral, Luigi de' Fieschi.
• June 17 – In the wake of the recent defeat of the Genoese Navy at the battle of Capo d'Anzio, Domenico di Campofregoso, Doge of the Republic of Genoa, is removed from office by the Genoese Senate and replaced by Nicolò Guarco.

July–September

• July 21 – The Ciompi Revolt becomes violent in the Republic of Florence as a group of 64 discontented wool carders, led by Salvestro de' Medici, briefly take over the government of Florence and place Michele di Lando in the executive office.
• August 4 – Gian Galeazzo Visconti succeeds his father, Galeazzo II Visconti, as ruler of Milan.
• August 11 – Battle of the Vozha River: Prince Dmitri Ivanovich of Moscow resists a small invasion by the Mongol Blue Horde under Mamai.
• September 3 – As regent for the 11-year-old King Richard II of England, his mother Joan of Kent summons the English Parliament, directing the members of the House of Commons and the House of Lords to assemble at Gloucester on October 20.
• September 20 – Unhappy with Pope Urban's critical attitude towards them, the majority of the cardinals meet at Fondi, elect Clement VII as antipope, and establish a rival papal court at Avignon. This split within the Catholic Church becomes known as the Western Schism, also known as the Great Schism. France, Aragon, Castile and León, Cyprus, Burgundy, Savoy, Naples and Scotland choose to recognise Antipope Clement VII. Denmark, England, Flanders, the Holy Roman Empire, Hungary, northern Italy, Ireland, Norway, Poland and Sweden continue to recognise Pope Urban VI.

October–December

• October 22 – Sir James Pickering is elected as Speaker of the English House of Commons.
• October 31 – The coronation of Count Onorato Caetani as the antipope Clement VII takes place in Italy at Fondi at the cathedral of San Pietro adjacent to the Caetani palace. Clement operates as a rival leader of the Roman Catholic Church for about a year before he and his cardinals relocate to Avignon.
• November 10 – The first observation of Halley's Comet from Earth is made, based on an estimate from orbital calculations.
• November 16 – The English Parliament concludes its session after four weeks, and royal assent is given to new laws passed during the session, including the Scandalum Magnatum Act 1378, prescribing penalties for "telling slanderous lies of the great men of the realm", the Pope Urban VI Act 1378 (declaring that Urban "was duly chosen pope, and so ought to be accepted and obeyed," and the Riots Act 1378 granting authority to award commissions to persons to arrest rioters }and other persons offensive to the peace."
• November 29 – Charles IV, Holy Roman Emperor, dies in Prague. He is succeeded by his son, Wenceslaus, as King of Bohemia, but the office of Holy Roman Emperor falls into abeyance, until Charles's son Sigismund is crowned in 1433.
• December 16 – The antipope Clement VII declares nine clerics to be added as cardinals of the Roman Catholic Church, joining those already allied with him as part of the Avignon Obedience against the cardinals of Pope Urban VI. Among the new "pseudo-cardinals", assigned to secure allegiance to the Antipope Clement from other European nations are Niccolò Brancaccio, Nicolas de Saint-Saturnin, Pierre Raimundi de Barrière Mirepoix, and Giacomo d'Itri.

Date unknown

• The Raseborg Castle is mentioned for the first time in documents, but its actual date of foundation is unknown.
• Tokhtamysh dethrones Temur-Malik to become Khan of the White Horde.
• Uthman Beg establishes the Aq Qoyunlu (Turkomans of the White Sheep) dynasty at Diyarbakır, in modern-day southeast Turkey.
• Ottoman Turks capture the town of Ihtiman in west Bulgaria.
• Tai Bian succeeds Zhao Bing Fa as King of Mong Mao (modern-day northern Myanmar).
• Sa'im al-Dahr is hanged for blowing the nose off the Great Sphinx of Giza.

January–March

• January 23 – Maria, Queen of Sicily since 1377, is kidnapped from her home at the Ursino Castle in Catania by Guglielmo Raimondo III of the rival House of Moncada claimants to the throne held by the House of Aragon. The action takes place with the support of King Pero IV of Aragon, who installs his son Martin of Aragon as the Viceroy of Sicily.
• February 16 – King Richard II of England issues an order directing the English Parliament to assemble on April 24 in London.
• February 18 – Heinrich III is installed as the new Duke of Mecklenburg at Schwerin (now part of Germany) upon the death of his father, Albrecht II.
• February 28 – In what is now part of Kazakhstan and Russia, Tulak Khan of Borjigin is confirmed by the Beylerbey Mamai of the Golden Horde, with the approval of the ruler Tokhtamysh, after Mamai arranges the assassination of Tulak's cousin, the former khan.
• March 24 – The First War of the Guelderian Succession ends after eight years of fighting in what is now the German state of North Rhine-Westphalia, between Wilhelm of Jülich and the Duchess Mechteld of Guelders. Duchess Mechteld, wife of John II, Count of Blois, who renounces all claims to further rule after a defeat at the Battle of Hönnepel. In return for her surrender of claims to Guelders, she receives an annual pension of 33,000 gold pieces.
• March 31 – The Treaty of Briones is signed between King Carlos of Navarre and King Enrique of Castile, ending a war that started the previous year. The Kingdom of Navarre ends its alliance with the Kingdom of England, whose troops it had allowed passage during the Hundred Years War.

April–June

• April 9 – (22nd day of third month of Eiwa 5) The Kōryaku era begins in the Northern Court of Japan at Kyoto on decree of the northern Emperor Go-En'yū because of a disastrous time of plague and war.
• April 24 – The English Parliament opens for a five-week session under the direction of King Richard II.
• May 7 – The Battle of Pola is fought in the Adriatic Sea between the navies of the Republic of Genoa and the Republic of Venice. The Venetian fleet, commanded by Admiral Vettor Pisani loses 19 of its 25 galleys in the battle, but Genoese Admiral Luciano Doria is killed in the battle. One of Doria's lieutenants conceals the admiral's death from the rest of the sailors by donning the admiral's clothes. Admiral Pisani is put in prison upon his return to Venice, but later released when Genoa invades in the Battle of Chioggia.
• May 27 – The English Parliament closes after a short session, and King Richard II issues royal assent to legislation passed, including the Riots Act 1379, a prohibition against "fraudulent deeds made by debtors to avoid their creditors", and a confirmation of liberties of the Church.
• May 29 – John I succeeds his father, Henry II, as King of Castile and King of León.
• June 30 – New College, Oxford, is founded in England by William of Wykeham, Bishop of Winchester.

July–September

• July 1 – Forces of the Republic of Venice and Ottoman Turks, having invaded Constantinople, restore John V Palaiologos as Byzantine co-emperor. Andronikos IV Palaiologos is allowed to remain as co-emperor, but is confined to the city of Silivri for the remainder of his life.
• August 16 – The Republic of Genoa, led by the Doge Nicolò Guarco and its allies from Hungary and Padua, captures Venice's port of Chioggia and seize the Venetian Army garrison there and soon threaten to take Venice and the Venetian Republic. An attempt by the Venetian Senate to apply for peace is rejected as Genoa demands a full surrender, and the Venetians resolve to fight, releasing Admiral Pisani from prison.
• September 9 – The Treaty of Neuberg is signed, splitting the Austrian Habsburg lands between brothers Albert III and Leopold III. Albert III retains the title of Duke of Austria.

• September 14 – Andrea Contarini, Doge of Venice, announces to the besieged Venetians that the Republic will fight Genoa rather than surrender their nation.

October–December

• October 20 – King Richard II issues a summons directing the English Parliament to assemble on January 16.
• November 28 – From Avignon in France, the antipope Clement VII issues his own a papal bull confirming the foundation of the University of Perpignan.
• December 22 – Andrea Contarini, the Doge of the Republic of Venice, directs Admiral Pisani to blockade the port of Genoa, effectively trapping the Genoese fleet and preventing the occupation of Venice.

Date unknown

• Bairam Khawaja establishes the independent principality of the Kara Koyunlu (Turkomans of the Black Sheep Empire), in modern-day Armenia.
• Dmitry Donskoy of Moscow raids Estonia.
• In the Hundred Years' War, the French lose control of most of Brittany to the English.
• Wisbech Grammar School is founded in England.
• Timur conquers the Sufid Dynasty of Khwarazm.

Births

1370

• April 11 – Frederick I, Elector of Saxony (d. 1428)
• July 23 – Pier Paolo Vergerio the Elder, Italian humanist (d. 1444 or 1445)
• date unknown
  • Erasmo of Narni, Italian mercenary (d. 1443)
  • Guarino da Verona, Italian humanist (d. 1460)
  • John VII Palaiologos, Byzantine Emperor (d. 1408)
  • King Olav IV of Norway (d. 1387)
  • Jan Piast, Duke of Ziebice (d. 1428)
  • Jan Sindel, Polish scientist (d. 1443)
• probable
  • Joan of Navarre, Queen of England, Duchess regent of Brittany (d. 1437)
  • John Lydgate, English Benedictine monk and poet (d. 1451)
  • Paulus Vladimiri, Polish scholar (d. 1435)
  • Duke William of Austria (d. 1406)

1371

• May 28 – John the Fearless, Duke of Burgundy (d. 1419)
• September 21 – Frederick I, Elector of Brandenburg (d. 1440)
• December 30 – Prince Vasily I of Moscow (d. 1425)
• date unknown
  • Leopold IV, Duke of Austria (d. 1411)
  • Sophia of Lithuania, regent of Lithuania (d. 1453)
  • Zheng He, Chinese mariner and explorer (d. 1433)
• probable – Isabeau de Bavière, queen of Charles VI of France (d. 1435)

1372

• February 18 – Ibn Hajar al-Asqalani, Islamic scholar (d. 1449)
• March 13 – Louis I, Duke of Orléans, son of King Charles V of France (d. 1407)
• September 8 – Thomas Holland, 1st Duke of Surrey (d. 1400)
• October – John Hastings, 3rd Earl of Pembroke (d. 1389)
• approximate date
  • Helena Dragaš, empress consort of Byzantium (d. 1450)
  • Olivera, daughter of Lazar of Serbia and wife of Bayezid I

1373

• March 29 – Marie d'Alençon, French princess (d. 1417)
• June 25 – Queen Joanna II of Naples (d. 1435)
• September 22 – Thomas le Despenser, 1st Earl of Gloucester (d. 1400)
• date unknown
  • Edward of Norwich, 2nd Duke of York (d. 1415)
  • Margery Kempe, writer of the first autobiography in English

1374

• April 11 – Roger Mortimer, 4th Earl of March, heir to the throne of England (d. 1398)
• November 26 – Yury Dmitrievich, Russian grand prince (d. 1434)
• probable
  • Queen Jadwiga of Poland
  • King Martin I of Sicily (d. 1409)

1375

• October – Joanna of Aragon, Countess of Foix, Aragonese throne claimant (d. 1407)
• date unknown
  • Richard of Conisburgh, 3rd Earl of Cambridge (approximate date; d. 1415)
  • Nicolas Grenon, French composer (approximate date; d. 1456)
  • Lan Kham Deng, King of Lan Xang 1416–1428 (d. 1428)
  • Johannes Abezier (1375–1424), Roman Catholic religious and political leader of the Teutonic Knights, over Polish territory

1376

• November 9 – Edmund Mortimer, English nobleman and rebel (d. c. 1409)
• date unknown
  • Gihwa, scholar in Korean Buddhism (d. 1433)
  • Sofia of Bavaria, queen consort of Bohemia (d. 1425)
  • Yusuf III, Sultan of Granada (d. 1417)

1377

• February 15 – King Ladislaus of Naples (d. 1414)
• August 1 – Emperor Go-Komatsu of Japan (d. 1433)
• August 20 – Shahrukh Mirza, ruler of Persia and Transoxiania (d. 1447)
• September 19 – Albert IV, Duke of Austria (d. 1404)
• December 5 – Jianwen Emperor of China (d. 1402)
• date unknown
  • Louis II of Anjou (d. 1417)
  • Filippo Brunelleschi, Italian architect (d. 1446)
  • Anglesia Visconti, queen consort of Cyprus (d. 1439)
  • Ernest, Duke of Austria (d. 1424)
  • Oswald von Wolkenstein, Austrian poet (d. 1445)
  • Stefan Lazarević, Despot of Serbia (d. 1427)
  • Đurađ Branković, Despot of Serbia (d. 1456)
  • Guru Ravidas, (d. 1528)

1378

• January 23 – Louis III, Elector Palatine (d. 1436)
• May 27 – Zhu Quan, Chinese military commander, historian and playwright (d. 1448)
• August 16 – Hongxi Emperor of China (d. 1425)
• October 24 – David Stewart, Duke of Rothesay, heir to throne of Scotland (d. 1402)
• December 31 – Pope Callixtus III (d. 1458)
• date unknown
  • Vittorino da Feltre, Italian humanist (d. 1446)
  • Joan II, Countess of Auvergne, French vassal (d. 1424)
  • Lorenzo Ghiberti, Italian sculptor and metal-worker (d. 1455)
  • John Hardyng, English chronicler (d. 1465)
  • Narasimha Saraswati - Indian Guru and Saint

1379

• October 4 – King Henry III of Castile (d. 1406)
• date unknown
  • Jerome of Prague, Hussite (d. 1416)
  • Empress Zhang (Hongxi) of China (d. 1442)

Deaths

1370

• May 31 – St. Vitalis of Assisi, Italian hermit (b. 1295)
• c. September 20 – Edward of Angoulême, French-born royal prince of England (b. 1365)
• November 5 – Casimir III the Great, King of Poland (b. 1310)
• December 19 – Pope Urban V (b. 1310)
• date unknown
  • Simeon Uroš, Emperor of Serbs and Greeks and half-brother of Stefan Dušan (b. 1326)
  • Vedanta Desika, Indian Hindu guru and poet (b. 1269)
  • Yang Weizhen, Chinese painter (b. c. 1296)
  • Toghon Temür, Emperor Huizong of Yuan dynasty China (b. 1320)
• probable date – Empress Gi of Yuan dynasty China (b. 1315)

1371

• January/February – Paul, Latin Patriarch of Constantinople
• February 17 – Ivan Alexander of Bulgaria
• February 22 – David II of Scotland (b. 1324)
• March 4 – Jeanne d'Évreux, queen consort of France (b. 1310)
• September – Thomas de Vere, 8th Earl of Oxford (b. c. 1336)
• September 26 – Jovan Uglješa, Serbian despot
• September 26 – Vukašin Mrnjavčević, Serbian king

1372

• January 11 – Eleanor of Lancaster, English noblewoman (b. 1318)
• March 19 – John II, Marquess of Montferrat (b. 1321)
• March 21 – Rudolf VI, Margrave of Baden
• August 24 – Casimir III, Duke of Pomerania (b. 1348)
• August 31 – Ralph de Stafford, 1st Earl of Stafford, English soldier (b. 1301)
• date unknown – Bagrat I of Imereti, King of Georgia
• date unknown – Newaya Krestos, Emperor of Ethiopia

1373

• January 16 – Humphrey de Bohun, 7th Earl of Hereford (b. 1342)
• February – Ibn Kathir, Mamluk Islamic scholar (b. 1301)
• July 23 – Saint Birgitta, Swedish saint (b. 1303)
• November 3 – Jeanne de Valois, Queen of Navarre (b. 1343)
• December 7 – Rafał of Tarnów, Polish nobleman (b. c. 1330)
• date unknown
  • Constantine IV, King of Armenia (assassinated)
  • Robert le Coq, French bishop and councillor
  • Tiphaine Raguenel, Breton astrologer (b. c. 1335)

1374

• March 12 – Emperor Go-Kōgon of Japan (b. 1338).
• June 5 or June 6 – William Whittlesey, Archbishop of Canterbury
• June 29 – Jan Milíč of Kroměříž, Czech priest and reformer
• July 19 – Petrarch, Italian poet (b. 1304)
• September – Joanna of Flanders, Duchess of Brittany (b. 1295)
• October 27 – King Gongmin of Goryeo (b. 1330)
• November 25 – Prince Philip II of Taranto
• December 1 – Magnus Eriksson, king of Sweden (b. 1316)
• date unknown – Gao Qi, Chinese poet (born 1336)
• date unknown – Konrad of Megenberg, historian (b. 1309)

1375

• April 21 – Elisabeth of Meissen, Burgravine consort of Nuremberg (b. 1329)
• October 19 – Cansignorio della Scala, Lord of Verona (b. 1340)
• April 16 – John Hastings, 2nd Earl of Pembroke, English nobleman and soldier (b. 1347)
• May 16 – Liu Bowen, Chinese military strategist, officer, statesman and poet (b. 1311)
• July 5 – Charles III of Alençon, French archbishop (b. 1337)
• September 1 – Philip of Valois, Duke of Orléans (b. 1336)
• October 24 – King Valdemar IV of Denmark
• November 12 – John Henry, Margrave of Moravia (b. 1322)
• December 21 – Giovanni Boccaccio, Italian writer (b. 1313)
• date unknown
  • Adityawarman, king of Malayapura
  • Margaret Drummond, dowager queen consort of Scotland (b. c.1340)
  • Lațcu, voivode of Moldavia
  • Tenoch, Mexica ruler

1376

• January 24 – Richard FitzAlan, 10th Earl of Arundel, English military leader
• April 6 – Przecław of Pogorzela, Cardinal and Bishop of Wrocław (b. 1310)
• May 30 – Joan of Ponthieu, Dame of Epernon, French countess regent
• June 8 – Edward the Black Prince, son of King Edward III of England (b. 1330)
• July 22 – Simon Langham, Archbishop of Canterbury (b. 1310)
• September 30 – Adelaide of Vianden, German countess

1377

• January 27 – Frederick the Simple, King of Sicily (b. 1341)
• March 16 or March 17 – Marie de St Pol, Countess of Pembroke and Foundress of Pembroke College, Cambridge (b. c.1303)
• April – Guillaume de Machaut, French poet and composer (b. c. 1300)
• April 23 or July 11 – Richardis of Schwerin, queen consort of Sweden (b. 1347)
• May – Algirdas, Grand Prince of Lithuania
• June 21 – King Edward III of England (b. 1312)
• date unknown
  • Ibn Battuta, Moroccan explorer (b. 1304)
  • Vladislav I, Prince of Wallachia

1378

Charles IV, Holy Roman Emperor

• February 6 – Joanna of Bourbon, queen consort of Charles V of France (b. 1338)
• March 27 – Pope Gregory XI (b. c. 1329)
• July – Owain Lawgoch, titular Prince of Wales and mercenary – assassinated (b. c. 1330)
• August 4 – Galeazzo II Visconti, Lord of Milan (b. c. 1320)
• November 29 – Charles IV, Holy Roman Emperor (b. 1316)
• November 30 – Andrew Stratford, English verderer and landowner

1379

• February 18 – Albert II of Mecklenburg (b. c. 1318)
• May 29 – King Henry II of Castile (b. 1333)
• November 15 – Otto V, Duke of Bavaria (b. 1346)
• December 16 – John Fitzalan, Marshal of England (drowned)
• date unknown – Aqsara'i, Persian physician