Batu Khan

Batu Khan (c. 1205–1255) was a Mongol ruler and founder of the Golden Horde, a constituent of the Mongol Empire established after Genghis Khan's demise. Batu was a son of Jochi, thus officially a grandson of Genghis Khan (Jochi's paternity is highly uncertain). His ulus ruled over the Kievan Rus', Volga Bulgaria, Cumania, and the Caucasus for around 250 years.

Source: Wikipedia — https://en.wikipedia.org/wiki/Batu_Khan