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1255 facts for kids

Kids Encyclopedia Facts
Millennium: 2nd millennium
Centuries: 12th century13th century14th century
Decades: 1220s  1230s  1240s  – 1250s –  1260s  1270s  1280s
Years: 1252 1253 125412551256 1257 1258



Western Europe

Central and Eastern Europe

  • May – William of Rubruck from Constantinople returns to Cyprus from his missionary journey to convert the Tatars of central and eastern Asia, his efforts having been unsuccessful.
  • Königsberg (now Kaliningrad) is founded in Prussia.
  • Theodore II Lascaris, Byzantine Emperor (in exile in the Empire of Nicaea), conducts a military campaign to recover Thrace from the Bulgarians. He concludes the task successfully a year later in 1256.
  • The Duchy of Bavaria is split into Upper and Lower Bavaria
  • The German state of Nassau is divided, not to be reunited until 1806.
  • King Béla IV of Hungary grants Banská Bystrica municipal rights of a royal town.


  • Hulagu Khan is dispatched by his brother Möngke Khan to destroy the remaining Muslim states in southwestern Asia.



  • May 1 – Walter de Gray, English prelate and statesman
  • Little Saint Hugh of Lincoln (born 1247)
  • Jarler, Archbishop of Sweden
  • Sundiata Keita, semi-historical hero and founder of the Mali Empire. (approximate date; born c. 1190)
  • Batu Khan, Mongol ruler and founder of the Blue Horde.
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1255 Facts for Kids. Kiddle Encyclopedia.