7 events the sources record for this year, grouped by region.
What happened
China (6)
Youzhou troops defeated the Taiyuan troops at Yuzhou in a great defeat, captured An Jinjun, and presented him to the court. (Old Book of Tang (Jiu Tangshu), Annals 舊唐書 卷20上 大順1年 4月)
Zhang Jun and Han Jian abandoned Jinzhou and Jiangzhou and fled; Li Cunxin took Jin and Jiang and greatly plundered the four prefectures of Hezhong. (Old Book of Tang (Jiu Tangshu), Annals 舊唐書 卷20上 大順1年 12月)
Zhang Jun was utterly defeated by Li Keyong at Yindi (the failed campaign against Hedong). (New Book of Tang (Xin Tangshu), Annals 新唐書 卷010 昭宗·哀帝 大順1年11月)
Li Keyong attacks Xingzhou; Meng Qian runs out of food and captures Wang Qianyu and the Bian troops to surrender. (Zizhi Tongjian (Comprehensive Mirror) 資治通鑑 卷258)
Guthrum, king of the northern people (baptismal name Æthelstan), died, and (the army) settled in East Anglia. (Anglo-Saxon Chronicle Giles/Ingram 1847 A.D. 890 항 (pg657.txt 줄 3006))