Nogai Khan
Chaka was the son of the Mongol leader Nogai Khan by a wife named Alaka. Sometime after 1285 Chaka married a daughter of George Terter I of Bulgaria, named Elena. In the late 1290s, Chaka supported his father Nogai in a war against the legitimate khan of the Golden Horde Toqta, but Toqta was victorious and defeated and killed Nogai in 1299.