5 events the sources record for this year, grouped by region.
What happened
China (4)
Yelü Yixin slandered the crown prince, beat him with cudgels, and confined him within the palace. (History of Liao (Liaoshi) 遼史 卷23 大康3年 6月)
Deposed the crown prince, reduced him to commoner status, and confined him in Shangjing. (History of Liao (Liaoshi) 遼史 卷23 大康3年 6月)
A retainer of Yelü Yixin secretly killed the commoner Yelü Jun in Shangjing. (History of Liao (Liaoshi) 遼史 卷23 大康3年 11月)
In the seventh month the Yellow River overflowed repeatedly at Yuzhou's Wanggong, Jizhou, Huizhou and Huozhou; on the day yichou it burst at Caocun in Chanzhou, cutting the northern flow of the Chan and shifting the river course south; at Liangshan Marsh it split in two, one flowing to the Huai and one to the sea. (Xu Zizhi Tongjian (Continuation of the Comprehensive Mirror) 續資治通鑑 卷072 (1077년 조))
Western Europe (1)
London burned greatly on the night before the Assumption. (Anglo-Saxon Chronicle Giles/Ingram 1847 A.D. 1077 항 (pg657.txt 줄 7486))