Historical Events
- Jun 11 Harderwijk (Netherlands) becomes a city
Famous People Who Died in 1231
- Jun 12 Antonius van Padua [Fernando M de Bulhom], Port minister, dies at 35
- Jun 13 Anthony of Padua, Portuguese saint, dies at 35
- Sep 15 Louis I, Duke of Wittelsbach, dies
- Nov 6 Emperor Tsuchimikado of Japan (b. 1196)
- Nov 17 Elisabeth of Hungary, daughter of Andrew II of Hungary (b. 1207)