Battle of Ümera (Estonian: Ümera lahing), also known as the Battle of Imera (Latvian: Kauja pie Imeras), was a battle during the Livonian Crusade between the Livonian Brothers of the Sword, their Christian Livonian and Latgalian allies, and the Estonians. The Battle was fought near the Jumara, a tributary of the Gauja River in August or September 1210.
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