Deaths on January 12

Louis I, Landgrave of Thuringia

Ludwig I or Louis I (died January 12, 1140) was ruler of Thuringia from 1123 to 1140.

21 Aug

Battle of Yancheng
Song dynasty general Yue Fei defeats an army led by Jin dynasty general Wuzhu at the Battle of Yancheng during the Jin-Song Wars.
21 Dec

Siege of Weinsberg
Conrad III of Germany besieged Weinsberg.