Events

• End of the reign of Emperor Tsuchimikado of Japan
• Emperor Juntoku ascends to the throne of Japan
• Otto IV, Holy Roman Emperor excommunicated by Pope Innocent III for invading southern Italy in 1210
• Gottfried von Strassburg writes his epic poem Tristan about 1210
• Beginning of Delhi Sultanate

Births

• May 5 - King Afonso III of Portugal
• Pope Honorius IV (assumed birth year)

Deaths

• Shahab-ud-din Ghori (assassinated)

Monarchs/Presidents

• France - Philippe II, Auguste King of France (reigned from 1180 to 1223)
• Mongol Empire - Genghis Khan, Mongol Khan (from 1206 to 1227)
• Venice - Pietro Ziani Doge of Venice (ruled from 1205 to 1229)