↑Kafadar, Cemal (1995). Between Two Worlds: The Construction of the Ottoman State. p. 122. ISBN978-0-520-20600-7. That they hailed from the Kayı branch of the Oğuz confederacy seems to be a creative "rediscovery" in the genealogical concoction of the fifteenth century. It is missing not only in Ahmedi but also, and more importantly, in the Yahşi Fakih-Aşıkpaşazade narrative, which gives its own version of an elaborate genealogical family tree going back to Noah. If there was a particularly significant claim to Kayı lineage, it is hard to imagine that Yahşi Fakih would not have heard of it
Lowry, Heath (2003). The Nature of the Early Ottoman State. SUNY Press. p. 78. ISBN0-7914-5636-6. Based on these charters, all of which were drawn up between 1324 and 1360 (almost one hundred fifty years prior to the emergence of the Ottoman dynastic myth identifying them as members of the Kayı branch of the Oguz federation of Turkish tribes), we may posit that...
Shaw, Stanford (1976). History of the Ottoman Empire and Modern Turkey. Cambridge University Press. p. 13. The problem of Ottoman origins has preoccupied students of history, but because of both the absence of contemporary source materials and conflicting accounts written subsequent to the events there seems to be no basis for a definitive statement.
↑who argue either that the Kayı genealogy was fabricated in the fifteenth century, or that there is otherwise insufficient evidence to believe in it.[5]
↑ 7.07.1Kermeli, Eugenia (2009). "Osman I". In Ágoston, Gábor; Bruce Masters (eds.). Encyclopedia of the Ottoman Empire. p. 444. Reliable information regarding Osman is scarce. His birth date is unknown and his symbolic significance as the father of the dynasty has encouraged the development of mythic tales regarding the ruler's life and origins
↑Lindner, Rudi P. (1983). Nomads and Ottomans in Medieval Anatolia. Bloomington: Indiana University Press. p. 21. No source provides a firm and factual recounting of the deeds of Osman's father.
↑Rudi Paul Lindner, (2007), Explorations in Ottoman Prehistory, p. 29
↑Ali Anooshahr, The Ghazi Sultans and the Frontiers of Islam, pg. 157
↑Güler, Turgut. Mahzun Hududlar Çağlayan Sular (in ਤੁਰਕੀ). Ötüken Neşriyat A.Ş. ISBN978-605-155-702-1. Retrieved 12 March 2020. In the tomb's garden, there is a grave belonging to Ertuğrul's wife, Halime Hâtûn. However, here there must be some information mistakes. The name of the esteemed woman who was the wife of Ertuğrul Gâzi and mother of Osman Gâzi is "Hayme Ana", and her grave is in the Çarşamba village of Kütahya's Domaniç district. Sultan Abdülhamid II, who had the Ertuğrul Gâzi Tomb repaired, also had the Hayme Ana Tomb as good as rebuilt in the same years. Therefore, the grave in Söğüt said to be of Halime Hâtûn, must belong to another deceased.
