Mamai

Mamai (Mongolian Cyrillic: Мамай, ; 1325?–1380/1381) was a powerful Turko-Mongol military commander in Beylerbey rank of the Golden Horde from Kiyat clan. Contrary to popular misconception, he was not a khan (king), but was a kingmaker for several khans, and dominated parts or all of the Golden Horde for almost two decades in the 1360s and 1370s. Although he was unable to stabilize central authority during the 14th-century Golden Horde war of succession known as the Great Troubles, Mamai remained a remarkable and persistent leader for decades, while others came and went in rapid succession. His defeat in the Battle of Kulikovo marked the beginning of the decline of the Horde, as well as his own rapid downfall. Provided by Wikipedia