Osman I or Osman Ghazi was the eponymous founder of the Ottoman Empire. While initially a small Turkoman principality during Osman's lifetime, his beylik transformed into a vast empire in the centurie
An Ottoman miniature depicting Osman I, c. 1580
16th-century depiction of Otomano P[rim]o (Osman I) by Paolo Veronese
Gündüz Alp was the likely father of Ertuğrul and grandfather of Osman I, the founder of the Ottoman Dynasty according to legend. According to some sources, the name of one of the sons of Ertuğrul was