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, had more documented descendants than his brothers Ögedei, Chagatai, and Tolui—but there is some uncertainty about his fatherhood. According to The Secret History of the Mongols, the boy was entrusted by Chilger, who had abducted his first wife Börte, keeping her in captivity for roughly a year.