Historical Events
- May 24 The Fifth Crusade leaves Acre for Egypt
Famous Birthdays
- May 1 John I, Count of Hainaut (1246-57), born in Houffalize, Luxembourg (d. 1257)
- May 1 Rudolf I, King of Germany, Emperor of the Holy Roman Empire (1273-91), born in Limburgh Castle, Sasbach am Kaiserstuhl, Germany (d. 1291)