"Ottoman ruler" . . "Ertu\u011Frul (Ottoman Turkish: \u0627\u0631\u0637\u063A\u0631\u0644\u200E, often with the title Gazi) (1191 \u2013 1281) was the father of Osman I, the founder of the Ottoman Empire. He was the leader of the Kay\u0131 clan of the Oghuz Turks. When arriving in Anatolia from Merv (Turkmenistan) with his 400 horsemen to aid the Seljuks of Rum against the Byzantines, Ertu\u011Frul set off the chain of events that would ultimately lead to the founding of the Ottoman Empire."@en . "1281Z"^^ . . . "Ertugrul"@en . "1198Z"^^ . "Ertu\u011Frul Gazi"@en . "Ertu\u011Frul"@en . "1230Z"^^ . "1281Z"^^ . "Leader of theKay\u0131 tribe(pre-Ottoman Empire)"@en .