All events in September :  

Births:

1 . Ibn Jubayr, Muslim geographer and poet was born 1. September 1145. (died 1217)

2 . Elizabeth Richeza of Poland , was born 1. September 1286. (died 1335)

3 . Gonzalo Fernández de Córdoba, Spanish general was born 1. September 1453. (died 1515)

4 . Edward Alleyn, English actor, founded Dulwich College was born 1. September 1566. (died 1626)

Deaths:

1 . Baldwin V, Count of Flanders died 1. September 1067. (born 1012)

2 . Pope Adrian IV , died 1. September 1159. (born 1100)

3 . Kujō Yoritsune, Japanese shogun died 1. September 1256. (born 1218)

4 . William de Ros, 6th Baron de Ros, English politician, Lord High Treasurer died 1. September 1414. (born 1369)

Events:

1 . Possible start of first Byzantine indiction cycle. (1. September, 462)

2 . King Stephen V of Hungary writes his walk to the antiquum castellum near Miholjanec, where the Sword of Attila was recently discovered. (1. September, 1270)

3 . King Tvrtko I of Bosnia writes In castro nostro Vizoka vocatum from the old town of Visoki. (1. September, 1355)

4 . Tumu Crisis – Mongolscapture the Emperor of China. (1. September, 1449)