سليمان شاه
In chapter fourteenth of " of Âşıkpaşazâde," Osman I asserted that he had descended from "Gökalp" and "Suleiman ibn Qutulmish" the founder of Anatolian Seljuk Sultanate instead of ""Süleymanşâh ibn Kaya Alp"." Erhan Afyoncu claims that the identity of "Süleyman Şah" in the Tomb of Suleyman Shah is unidentified. He also defends that the father of "Ertuğrul" according to the recent investigations is "Gündüz Alp."