Events

• Batu Khan and the Golden Horde sack the Ruthenian city of Kyiv

Births

• Pope Benedict XI

Deaths

• April 11 - Llywelyn ap Iorwerth, also known as Llywelyn "The Great" Prince of Gwynedd

Monarchs/Presidents

• Aragon - James I King of Aragon and count of Barcelona (reigned from 1213 to 1276)
• Castile - Ferdinand III, the Saint King of Castile and Leon (reigned from 1217 to 1252)