Ögedei Khan
Kaidu was the son of Kashin (whose name is also spelled Qashi) and therefore a grandson of Ögedei Khan and Töregene Khatun, and a great-grandson of Genghis Khan and Börte. His mother's name was Shabkana Khatun from the Bekrin (Mekrin) tribe of mountaineers that were "neither Mongols, nor Uighurs".