Bātū b. Jochī b. Chinggis Khān (d. c. 653/1255-6) was a Mongol khān and founder of the power known to European historians as the Golden Horde but which Muslim sources refer to as the ulus (territory, appanage) of Jochī, after Bātū's father, the eldest son of Chinggis Khān (Genghis Khan, r. 602-26/1206-29). In 632/1235, Bātū's uncle, the Great Khān (qaghan) Ögödei (also spelled Ögedey, or Ögödey), gave him nominal command of a large-scale expedition, which included contingents led by various other