 As allies of Jamukha and the Keraites, they would defeat the latter bitterly.Although the ruling Tayichiud clan was destroyed by Genghis, their descendants, who had surrendered, achieved fame in parts of the Mongol Empire.Jebe (born Jurgaadai), who had struck the final blow to the Jurchens during the Mongol conquest of the Jin dynasty in 1219 and defeated the Kypchaks and their European allies at the battle of Kalka in 1223, was from Besud clan of Tayichiud.