Birth of Osman I
Birth of Osman I
Role range: 1280-1324
Historical biography archive · Updated 2026-11-03
Osman I Biography and Timeline
Follow Osman I through 30 dated historical records for Turkey.
Osman I, historical timeline
A chronological timeline drawn from matching World History Database records.
30Distinct records
1 of 1Page
1258–1326Years on this page
1258
1280
Succession
Succeeds as Sultan of the Turkish Empire
Role range: 1280-1324
1285
Clash at Ermenibeli
Later Ottoman tradition records an early clash at Ermenibeli during Osman's conflict with the lord of Inegol.
Role range: 1290-1326
Night Raid near Inegol
Later Ottoman tradition records Osman leading a night raid against Byzantine settlements near Inegol.
Role range: 1290-1326
Raid on Kulaca Hisar
Osman's forces raided and burned the small Byzantine stronghold of Kulaca Hisar near Inegol.
Role range: 1290-1326
1286
Battle of Domanic
Osman fought forces associated with Inegol and Karacahisar in a major early battle near Domanic.
Role range: 1290-1326
Death of Saru Yati
Osman's brother Saru Yati was killed during the fighting near Domanic.
Role range: 1290-1326
1288
Capture of Karacahisar
Osman captured the strategically important Byzantine fortress of Karacahisar and made it a principal base.
Role range: 1290-1326
Control of Eskisehir
The capture of Karacahisar enabled Osman to establish effective control over the Eskisehir area.
Role range: 1290-1326
1290
Raid on Goynuk
Osman's forces advanced through and raided the Goynuk area during a wider Sakarya campaign.
Role range: 1290-1326
Raid on Mudurnu
Osman's forces raided the Mudurnu district during operations beyond the immediate Karacahisar frontier.
Role range: 1290-1326
Raid on Tarakli Yenicesi
Osman's forces raided Tarakli Yenicesi while extending pressure on Byzantine frontier settlements.
Role range: 1290-1326
Submission of Sorkun
During a Sakarya expedition, the people of Sorkun submitted and avoided plunder under an agreement with Osman's forces.
Role range: 1290-1326
1299
Capture of Bilecik
Ottoman tradition places the capture of Bilecik during Osman's westward expansion toward Bithynia.
Role range: 1290-1326
Capture of Yarhisar
Ottoman tradition places Yarhisar among the Byzantine strongholds brought under Osman's control during his expansion toward Bilecik and Yenisehir.
Role range: 1290-1326
Subjugation of Kopruhisar
Ottoman tradition records Osman bringing Kopruhisar under his authority before directing operations toward Nicaea.
Role range: 1290-1326
Yenisehir Frontier Base
Osman established Yenisehir as an advanced base for raids into Byzantine Bithynia.
Role range: 1290-1326
1301
Rule of Asia Minor
Begins to clear the Byzantines out of Asia Minor
Role range: 1280-1324
Blockade of Nicaea
Osman began sustained pressure on Nicaea and attempted to isolate the city from surrounding Byzantine territory.
Role range: 1290-1326
1302
Battle of Bapheus
Osman defeated a Byzantine relief force at Bapheus, greatly increasing his military reputation in Bithynia.
Role range: 1290-1326
Nicaea Blockade Tower
Osman established a fortified position under Taz Ali to maintain pressure on the approaches to Nicaea.
Role range: 1290-1326
1304
Battle of Akhisar
Osman's forces defeated the Byzantine lord of Akhisar during the Sakarya campaign.
Role range: 1290-1326
Capture of Absu
Osman's 1304 Sakarya campaign brought Absu under his control as he tightened the isolation of Nicaea.
Role range: 1290-1326
Capture of Geyve
Osman captured the fortress at Geyve during operations designed to control routes toward Nicaea.
Role range: 1290-1326
Capture of Tekfurpinari
Osman's forces captured Tekfurpinari while consolidating control of the Sakarya corridor.
Role range: 1290-1326
Sakarya Campaign
Osman launched a major campaign along the Sakarya routes to isolate Nicaea and control the surrounding crossings.
Role range: 1290-1326
Submission of Lefke
The Byzantine lord of Lefke submitted to Osman during the Sakarya campaign and retained local authority under the new arrangement.
Role range: 1290-1326
Submission of Mekece
The lord of Mekece submitted to Osman as his forces advanced along the Sakarya valley.
Role range: 1290-1326
1317
Siege of Bursa
Begins the siege of Bursa which ends in Turkish victory in 1326
Role range: 1290-1326
1326
Death of Osman I
Death of Osman I
Role range: 1280-1324
Records, sources and methodology
These dates and descriptions come from the historical_events database. Exact duplicate records have been collapsed. Names are grouped by the country, Name 2 and Name 1 fields; records with missing Name 2 cannot be reliably assigned to an individual biography. Check the underlying sources before formal citation.