1258

1258 in various calendars
Gregorian calendar	1258; MCCLVIII
Ab urbe condita	2011
Armenian calendar	707; ԹՎ ՉԷ
Assyrian calendar	6008
Balinese saka calendar	1179–1180
Bengali calendar	665
Berber calendar	2208
English Regnal year	42 Hen. 3 – 43 Hen. 3
Buddhist calendar	1802
Burmese calendar	620
Byzantine calendar	6766–6767
Chinese calendar	丁巳年 (Fire Snake); 3955 or 3748; — to —; 戊午年 (Earth Horse); 3956 or 3749
Coptic calendar	974–975
Discordian calendar	2424
Ethiopian calendar	1250–1251
Hebrew calendar	5018–5019
Hindu calendars
- Vikram Samvat	1314–1315
- Shaka Samvat	1179–1180
- Kali Yuga	4358–4359
Holocene calendar	11258
Igbo calendar	258–259
Iranian calendar	636–637
Islamic calendar	655–656
Japanese calendar	Shōka (era) 2; (正嘉２年)
Javanese calendar	1167–1168
Julian calendar	1258; MCCLVIII
Korean calendar	3591
Minguo calendar	654 before ROC; 民前654年
Nanakshahi calendar	−210
Thai solar calendar	1800–1801
Tibetan calendar	阴火蛇年; (female Fire-Snake); 1384 or 1003 or 231; — to —; 阳土马年; (male Earth-Horse); 1385 or 1004 or 232

Millennium:	2nd millennium
Centuries:	12th century; 13th century ; 14th century;
Decades:	1230s; 1240s; 1250s ; 1260s; 1270s;
Years:	1255; 1256; 1257; 1258 ; 1259; 1260; 1261;

Year 1258 (MCCLVIII) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar.

Events

The observed effects of an eruption of the Indonesian volcano Mount Rinjani, in late 1257, include the following anecdotal accounts: dry fog in France; lunar eclipses in England; severe winter in Europe; a "harsh" spring in northern Iceland; famine in England, western Germany, France, and northern Italy; and pestilence in London, parts of France, Austria, Iraq, Syria, and southeast Turkey.^[1]

February 10 – The Siege of Baghdad ends with a battle, in which Hulagu Khan's Mongol forces overrun Baghdad, then the leading center of Islamic culture and learning, and capital of the Abbasid Caliphate. They burn the imperial city to the ground, killing as many as 1,000,000 citizens, and destroy the House of Wisdom, containing countless precious historical documents, and books on subjects ranging from medicine to astronomy.
June 25 – War of Saint Sabas: In the Battle of Acre, the Venetians defeat a larger Genoese fleet sailing to relieve Acre.
The Chinese era Baoyou ends, in the Southern Song Dynasty of China.
Korea surrenders to the Mongols, ending the effective resistance of the Choe faction within Korea.
The Mongol Empire invades the Đại Việt (present-day northern Vietnam).The Mongol army is soon defeated by the Đại Việt forces.

May 11 – The Treaty of Corbeil is signed between James I of Aragon and Louis IX of France. The French king, as the heir of Charlemagne, formally renounces his feudal overlordship over Catalonia (independent de facto since 988), while the Aragonese king renounces his claims over Occitania.
August 25 – George Mouzalon, regent of the Empire of Nicaea, is assassinated in Magnesia ad Sipylum, as part of a conspiracy led by nobles, under future emperor Michael VIII Palaiologos.
Llywelyn ap Gruffudd declares himself Prince of Wales. He is the final ruler of an independent Wales, before its conquest by the English.
King Henry III of England is forced by seven powerful barons to accept the Provisions of Oxford.
Gissur Þorvaldsson is made Earl of Iceland, by King Haakon IV of Norway.
The Mongol Golden Horde attacks Lithuania.
The Battle of Karydi ends the War of the Euboeote Succession in a crushing victory for William II of Villehardouin, Prince of Achaea.
Epirote–Nicaean conflict.

In Genoa, the Republic starts imposing forced loans, known as luoghi, to its taxpayers; they are a common resource of medieval public finance.^[2]

Civil unrest in northern Italy spawns the medieval musical form of Geisslerlieder, penitential songs sung by wandering bands of Flagellants.
The Mongols murder the Abbasid Caliph, and end the long-standing Islamic Empire.

Osman I, founder of the Ottoman Empire (d. 1326)
Trần Nhân Tông, emperor of Vietnam (d. 1308)
Lady Nijō, Japanese concubine and Buddhist nun
probable
- Arghun, fourth Ilkhanate ruler of Iran (d. 1291)
- Henryk IV Probus, Duke of Wrocław (d. 1290)

^ Stothers, R.B. (2000) "Climatic and Demographic consequences of the Massive Volcanic Eruption of 1258". Climatic Change, 45, 361–374.
^ Munro, John H. (2003). "The Medieval Origins of the Financial Revolution". The International History Review. 15 (3): 506–562.

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