- Apr 28 -May 7th) Utrecht destroyed by fire
- Apr 28 Nichiren, a Japanese Buddhist monk, propounds Nam Myoho Renge Kyo for the first time and declares it to be the essence of Buddhism, in effect founding Nichiren Buddhism.
- May 7 Flemish friar William of Rubruck sets off to convert the Mongols to Christianity, a mission ordered by French king Louis IX - one of the most famous travel accounts in the Medieval world
Event of Interest
Jul 23 Jews are expelled from Vienne, France by order of Pope Innocent IV
- Aug 9 Clare of Assisi's rules confirmed by Pope Innocent IV for Clare's Order of Poor Ladies
Gregory I
Gregory XIII
Julius II
Julius III
Leo X
Pius V