Suleyman Shah, born in the year one thousand one hundred sixty-seven, is a significant figure in the early history of the Ottoman Empire. He is traditionally recognized as the son of Kaya Alp and the father of Ertuğrul, who in turn was the father of Osman I, the founder of the empire. This lineage, however, has been a subject of debate among early Ottoman genealogists, with some suggesting that either Suleyman Shah or Gündüz Alp could be the grandfather of Osman.
In the year one thousand two hundred fourteen, Suleyman Shah succeeded his father as bey, a pivotal moment that marked the beginning of his leadership. Faced with the looming threat of Mongol invasions, he made the strategic decision to lead his tribe, which numbered around fifty thousand, westward. This migration was not merely a flight from danger; it was a significant movement that would shape the future of the Kayi tribe.
As they journeyed to the North Caucasus, thousands of Kayis settled in regions such as Erzincan and Ahlat. Meanwhile, other groups from the Kayi tribe dispersed into areas like Diyarbakir, Mardin, and Urfa. This migration not only ensured the survival of the tribe but also laid the groundwork for the eventual rise of the Ottoman Empire.
Historically, an Ottoman tomb associated with Suleyman Shah is believed to be located in or near Qal'at Ja'bar, further cementing his legacy in the annals of history. His leadership during a tumultuous period and his role in the lineage of the Ottoman dynasty make Suleyman Shah a pivotal figure in the narrative of this great empire.