Oghuz Khan. For three days he would not nurse and every night he appeared in his mother's dream and told his mother to become a Muslim or he would not suckle her breast. His mother converted, and Abū’l-Ghāzī writes that the Turkic peoples of Yafes from the time of Qara Khan had been Muslim but had lost the faith. Oghuz Khan restored Islamic belief. Seljuks The Seljuks originated from the Kinik branch of the Oghuz Turks, who in the 9th century lived on the periphery of the Muslim world, north of the Caspian Sea and Aral Sea in their Yabghu Khaganate of the Oghuz confederacy. During the 11th century, they established the Great Seljuk Empire under the command of the Seljuk chieftains Toghrul Beg and Chaghri Beg. Anushteginids There are certain historical sources that state that the Anushteginids, who ruled vast parts of Central Asia from 1077 to 1231 under the title of Khwarazmshahs, descended from the Begdili tribe of the Oghuz Turks. The dynasty was founded by commander Anush Tigin Gharchai, a former Turkic slave of the Seljuq sultans, who was appointed as governor of Khwarezm. His son, Qutb ad-Din Muhammad I, became the first hereditary Shah of Khwarezm. Qara Qoyunlu Qara Qoyunlu was a tribal confederation of Oguz Turkic nomadic tribes from the Oguz tribe of Yiva, which existed in the 14-15th centuries in Western Asia, on the territory of modern Azerbaijan, Armenia, Iraq, northwestern Iran and eastern Turkey. Aq Qoyunlu The Aq Qoyunlu Sultans claimed descent from Bayindir Khan, through a grandson of Oghuz Khagan. Ottomans Ottoman historian and ambassador to the Qara Qoyunlu, Şükrullah states that Ertuğrul's lineage goes to Gökalp, a son of Oghuz Khagan. The author states that the information was shown during a court of Jahan Shah, from a book written in Mongolian script. , in early 15th century, traced Osman's genealogy to Oghuz Khagan, through his senior grandson of his senior son, so giving the Ottoman sultans primacy among Turkish monarchs. Yazıcıoğlu quotes as follows: Bayezid I advanced this claim against Timur, who denigrated the Ottoman lineage. According to Ottoman historian Neşri, Osman had a grandfather with a king's name and came from a lineage of the senior branch of Oghuz family: Cem Sultan, Bayezid II's brother, linked their genealogy to Oghuz Khagan that would prevail as a tool of legitimization of the sixteenth century onwards: Legend According to a Turkic legend,