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The Osmanli ruler Osman I was the first Turkish ruler who minted coins in his own name in 1320s, for it bears the legend " Minted by Osman son of Ertugul ".

Among the Turkmen leaders the Ottomans emerged as great power under Osman and his son Orhan I. Smyrna was conquered in 1330 AD, and the last Byzantine possession, Philadélphia ( modern Alaşehir ), fell in 1390 AD.

He was married twice, to Valide Sultan Mahfiruze Hatice Sultan, originally named Maria, a Greek, mother of Osman II, and to Valide Sultan Kadinefendi Kösem Sultan or Mahpeyker, originally named Anastasia, a Greek, mother of Murad IV and Ibrahim I.

By the end of Andronikos II's reign, much of Bithynia was in the hands of the Ottoman Turks of Osman I and his son and heir Orhan.

Abdülhamid was imprisoned for most of the first forty-two years of his life by his cousins Mahmud I and Osman III and his older brother Mustafa III, as was custom.

One of the Ghazi emirates was led by Osman I ( 1258 – 1326 ), from which the name Ottoman is derived, son of Ertuğrul, around Eskişehir in western Anatolia.

During his reign as Sultan, Osman I extended the frontiers of Turkish settlement toward the edge of the Byzantine Empire.

In the century after the death of Osman I, Ottoman rule began to extend over the Eastern Mediterranean and the Balkans.

Osman I or Othman I or Osman Gazi ( 1258 – 1326 ) Sultan Osman Ghazi, or Osman Bey or I. Osman, Osman Gazi Han ), nicknamed " Kara " for his courage, was the leader of the Ottoman Turks, and the founder of the dynasty that established and ruled the Ottoman Empire.