Orhan Gazi was born in 1281. His father was Osman Gazi and his mother was Mal Sultana, the daughter of Omer, who was a respected person in the Kayi Clan. Orhan Gazi was tall, had a blonde beard and blue eyes. He was a benign, forgiving, religious and fair ruler. He admired the theologians. He had strong and patient character. He spent most of his time with his people or by visiting them. He had won the admire of his people in a short time.
Orhan Gazi became the leader of Kayi Clan after the death of Osman Gazi, in 1326. He had married to Teodora, the daughter of the Byzantine Emperor Yoannis Kontakuzinas XI, in 1346. His second wife was Holofira the daughter of the Byzantine Prince of Yarhisar. Holofira eloped with Orhan by leaving her marriage ceremony with the Prince of Bilecik. After she was married to Orhan Gazi she was converted to Islam and her name was changed as Nilufer Hatun. She gave birth to Murad, who had been the third sultan of the Ottomans.
His sons : SuleymanPasha, Murad, Ibrahim, Halil, Kasim.
His daughters : Fatma Hatun.