1256

Millennium:	2nd millennium
Centuries:	12th century 13th century 14th century
Decades:	1230s 1240s 1250s 1260s 1270s
Years:	1253 1254 1255 1256 1257 1258 1259

1256 in various calendars

Gregorian calendar	1256 MCCLVI
Ab urbe condita	2009
Armenian calendar	705 ԹՎ ՉԵ
Assyrian calendar	6006
Balinese saka calendar	1177–1178
Bengali calendar	663
Berber calendar	2206
English Regnal year	40 Hen. 3 – 41 Hen. 3
Buddhist calendar	1800
Burmese calendar	618
Byzantine calendar	6764–6765
Chinese calendar	乙卯年 (Wood Rabbit) 3953 or 3746     — to — 丙辰年 (Fire Dragon) 3954 or 3747
Coptic calendar	972–973
Discordian calendar	2422
Ethiopian calendar	1248–1249
Hebrew calendar	5016–5017
Hindu calendars
- Vikram Samvat	1312–1313
- Shaka Samvat	1177–1178
- Kali Yuga	4356–4357
Holocene calendar	11256
Igbo calendar	256–257
Iranian calendar	634–635
Islamic calendar	653–654
Japanese calendar	Kenchō 8 / Kōgen 1 (康元元年)
Javanese calendar	1165–1166
Julian calendar	1256 MCCLVI
Korean calendar	3589
Minguo calendar	656 before ROC 民前656年
Nanakshahi calendar	−212
Thai solar calendar	1798–1799
Tibetan calendar	阴木兔年 (female Wood-Rabbit) 1382 or 1001 or 229     — to — 阳火龙年 (male Fire-Dragon) 1383 or 1002 or 230

Year 1256 (MCCLVI) was a leap year starting on Saturday (link will display the full calendar) of the Julian calendar.

Events

By place

Europe

• May 4 – Pope Alexander IV issues the papal bull Licet ecclesiae catholicae, constituting the Order of Saint Augustine at Lecceto Monastery.
• The city of Lviv, in present-day Ukraine, founded by Danylo King of Rus, is first mentioned in the written account of Chełm fire.
• Theodore II Lascaris, Byzantine Emperor (in exile in the Empire of Nicaea), successfully concludes a military campaign started a year earlier, to recover Thrace from the Bulgarians.
• Abingdon School is founded in England.
• August 25 – In Bologna slavery and serfdom is abolished; the event is recorded in the document called Liber Paradisus.
• Roger Bacon becomes a Franciscan friar.
• The Church of Santa Costanza, Rome, is consecrated.
• The ancient Irish Kingdom of Breifne splits into East Breifne and West Breifne, after a war between the O'Reillys and the O'Rourkes.
• The War of the Euboeote Succession begins, involving most of the lords of Frankish Greece and the Republic of Venice.

Asia

• May – Mongol forces capture and sack Tun (modern-day Ferdows), Persia and massacre its people.* June 30 – A large volcanic eruption in Harrat Rahat (near Medina) is associated with an Islamic prophecy.
• October – Mongol commander Baiju (operating under Hulagu Khan's command) leads his forces in a victory over Kay Ka'us II of the Sultanate of Rum, thereby capturing Anatolia.
• November 19 – Nizari Ismaili Imam Rukn al-Din Khurshah surrendered to the invading Mongols under Hulagu while he was besieged in Maymun-Diz
• December 15 – Hulagu captures and dismantle the Alamut Castle after the surrender of the Nizari Ismaili leaders, disestablishing their state
• Hulagu Khan establishes the Ilkhanate dynasty of Persia, which will become one of four main divisions of the Mongol Empire.
• The Japanese Kenchō era ends, and the Kōgen era begins.

Births

• January 6 – Gertrude the Great, German mystic
• Robert, Count of Clermont, French founder of the House of Bourbon (d. 1317)
• Ibn al-Banna, Moroccan Arab mathematician (d. 1321)

Deaths

• January 28 – William II, Count of Holland, King of Germany
• April 12 – Margaret of Bourbon, Queen of Navarre, regent of Navarre (b. c. 1217)
• June 13 – Tankei, Japanese sculptor (b. 1173)
• September 1 – Kujō Yoritsune, Japanese shōgun (b. 1218)
• September 21 – William of Kilkenny, Lord Chancellor of England
• October 14 – Kujō Yoritsugu, Japanese shōgun (b. 1239)
• Johannes de Sacrobosco, English scholar
• Þórður kakali Sighvatsson, Icelandic leader