Osman III was born on 2 January 1699 in the Edirne Palace, his father was Mustafa II and his mother was Şehsuvar Sultan, he was younger half-brother of Mahmud I. When his father was deposed from the throne in 1703 he was taken back to Istanbul and was imprisoned in the Kafes, he lived in Kafes for 51 years. He was secretly circumcised on 17 April 1705 with other princes here. He was among the princes in Ahmed's entourage. He also later made trips to the sultan inside and outside the city. Together with his elder brother Mahmud's embassy on October 1, 1730, he became the biggest prince waiting for the throne.
Reign
Osman III lived most of his life as a prisoner in the palace, and as a consequence on becoming Sultan he had some behavioural peculiarities. Unlike previous Sultans, he hated music, and banished all musicians from the palace. with Sultan Osman III in 1755. Osman III's first activity was to choose the ones to work with. During his reign, the changes he made in high-level government duties, especially Grand Vizier, can be considered as attempts to reduce the extremely weighted role of the charitable authority in the previous sultan's era. In the severe storm of March 1756, an Egyptian galleon ran ashore in Kumkapi at dusk. Due to the storm, 600 passengers could not be evacuated. The sultan, who came to the shore, took all the passengers by bringing barges from the shipyard. He ordered the construction of a lighthouse in Ahırkapı to prevent such incidents. According to Baron de Tott, Osman III was an angry and modest type of ruler. The first procession of his enthronement was held on 14 December 1754. The historians of that time didn’t wrote the events happened in the empire because of severe and freezing cold of January 1755. Osman was responsible for a firman in 1757, that preserved the Status Quo of various Holy Land sites for Christians, Muslims, and Jews. In the second year of his reign, Osman lost his mother Şehsuvar Sultan, who had been in contact with his religiousness. Then, the biggest prince, Mehmed died of illness of 22 December 1756. According to the sources, the funeral of the prince, controlled by the quarry, grand vizier and sheikh al-Islam, was made with a large congregation attended by 5000 people. The news of contemporary works that the prince was poisoned and killed by the initiative of Köse Mustafa Pasha, the next sultan of the third sultan, Köse Mustafa Pasha. It is noted that in this period, provisions were sent against banditry in Anatolia and Rumelia, and especially the movements of headless beams, and that the sultan was also interested in these issues. Some measures were taken against the tribes of Bozulus and Cihanbeyli, the Armenians due to the turmoil in Iran, the bandit around Erzurum and Sivas, and the famous leader Karaosmanoğlu Hacı Mustafa Ağa was captured and executed, and his head was brought to Istanbul on 5 December 1755.
Architecture
Osman is famous for building Nuruosmaniye Mosque, whose construction started during the reign of Mahmud I. Nuruosmaniye Complex, also known as Osmaniye for a while, consisted of three schools, madrasahs, production, library, mausoleum, temporary room, mesh house, fountain, fountain, inn and shops. Osman built a new neighborhood in 1755-56 where Üsküdar Palace and Garden was located, along with its houses and shops, and built the Ihsaniye Mosque and its masjids, both of which stand today as İhsaniye. Osman III contrived a fountain in his name in 1755-56 and the fountain was destroyed after 122 years after its construction.
Death
He died on the night of 30 October 1757. In the early morning, his cousin ceremony was held and his cousin Mustafa III was placed on the throne. The new sultan ordered Osman to be buried in the New Mosque Mausoleum, not in Nuruosmaniye.
