The world in 1083 AD — what happened that year

6 events the sources record for this year, grouped by region.

What happened

Yelü Yixin, Prince of Hundong, tried to flee to Song and was executed. (History of Liao (Liaoshi) 遼史卷24 大康9年 10月)
In the second month, hundreds of thousands of Xia attacked Lanzhou; Military Commissioner Wang Wenyu repelled them with some seven hundred picked men. (History of Song (Songshi), Annals 宋史卷016 元豐六年)
In the second month, Xia's several tens of thousands suddenly reached Lanzhou and seized the two passes; Li Hao closed the gates and held the city. (Xu Zizhi Tongjian (Continuation of the Comprehensive Mirror) 續資治通鑑卷077 (1083년 조))

The emperor, seeing his own army flee and Bohemond pursue recklessly, seized the chance for a counterattack. (Anna Komnene, The Alexiad Dawes 5.6 (문장 3))
Siege of Kastoria: even when the walls were breached the city did not surrender, so the emperor sought other means. (Anna Komnene, The Alexiad Dawes 6.1 (문장 7))

A disturbance arose between Abbot Thurstan of Glastonbury and his monks, and armed men entered the church. (Anglo-Saxon Chronicle Giles/Ingram 1847 A.D. 1083 항 (pg657.txt 줄 7532))