Osman I Timeline

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c. 1258 - c. 1323

Life of Osman I.
c. 1280

Osman I succeeds his father Ertuğrul as ruler of his territory.
1299

Osman I’s forces lay siege to Nicaea.
1299 - 1326

Reign of Osman I.
1300

Osman I’s forces capture the city of Yenşiehir and make it the first capital of Osman’s Beylik.
1301

The Byzantine Empire breaks the siege of Nicaea.
1302

Osman I’s forces defeat the Byzantines at the Battle of Bapheus.
1308

The Bithynian capital of Prusa is put under siege by Osman I and his army.
c. 1323

Osman I dies and his son Orhan succeeds him.
1326

Orhan successfully captures the city of Prusa, which he renames Bursa.

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