Jochi, Genghis Khan's eldest son, had many more recorded progeny than his brothers Ögedei, Chagatai, and Tolui—but there is some doubt over his paternity. According to The Secret History of the Mongols, the boy was sent to Genghis by Chilger, who had kidnapped his first wife Börte, keeping her in captivity for about a year.
Jochi, Genghis Khan's eldest son, is believed to have fathered more children than his brothers Ögedei, Chagatai, and Tolui—but there is doubt about his paternity. According to The Secret History of the Mongols, Jochi was sent by Chilger, who had taken Börte, Jochi's first wife, into captivity for roughly a year.