8
Ertugrul was the father of Osman I, he was the son of Suleyman Shah, leader of the Kay tribe of Oghuz Turks, who fled from western Central Asia to Anatolia to escape the Mongol conquests, but he may instead have been the son of a Günduz Alp.
Added 1/21/2020 2:12:47 PM
This answer has been confirmed as correct and helpful.