Origin of the Ottoman Empire

The exact date of Osman's birth is unknown, and very little is known about his early life and origins due to the scarcity of sources and the many myths and legends which came to be told about him by the Ottomans in later centuries.[1][29] He was most likely born around the middle of the thirteenth century, possibly in 1254/5, the date given by the sixteenth-century Ottoman historian Kemalpaşazade.[2] According to Ottoman tradition, Osman's father Ertuğrul led the Turkic Kayı tribe west from Central Asia into Anatolia, fleeing the Mongol onslaught. He then pledged allegiance to the Sultan of the Anatolian Seljuks, who granted him dominion over the town of Söğüt on the Byzantine frontier.[30] This connection between Ertuğrul and the Seljuks, however, was largely invented by court chroniclers a century later, and the true origins of the Ottomans thus remain obscure.[31] Nothing is known for certain about Osman's early activities, except that he controlled the region around the town of Söğüt and from there launched raids against the neighboring Byzantine Empire. The first datable event in Osman's life is the Battle of Bapheus in 1301 or 1302, in which he defeated a Byzantine force sent to counter him.[32]

Osman appears to have followed the strategy of increasing his territories at the expense of the Byzantines while avoiding conflict with his more powerful Turkish neighbors.[30] His first advances were through the passes which lead from the barren areas of northern Phrygia near modern Eskişehir into the more fertile plains of Bithynia; according to Stanford Shaw, these conquests were achieved against the local Byzantine nobles, "some of whom were defeated in battle, others being absorbed peacefully by purchase contracts, marriage contracts, and the like."[33]

Osman became Emir, or Bey, upon his father's death around 680 AH / 1281 CE.[21] According to some historians, Osman's accession to power wasn't peaceful as he had to fight his relatives before he got hold of his clan's leadership. One of Osman's major rivals was his uncle Dündar Bey, who might have plotted to kill his nephew or rebelled against him when the latter decided to attack a small Greek island. Dündar Bey saw that Osman's ambition as a threat that might put the whole clan in danger. However, Osman had to pull out his sword to kill his uncle for disobeying.[34]

In the Vilayetname, a book containing the narrations about Haji Bektash Veli, Osman's younger uncle, was the one who became Bey after Ertuğrul's death. During that time, Osman and several other warriors started organizing raids on Byzantine lands adjacent to Söğüt, such as Yarhisar, Bilecik, İnegöl, and İznik. As a result, the Byzantine Tekfur (governor) of Bursa was provoked, and he sent envoys to the Seljuk Sultan Alâeddin Kayqubad III, complaining about these constant assaults. Thus, the Sultan ordered Gündüz Alp to bring forth his young nephew to stand before him, and so Osman was arrested and sent to Konya. According to this narration, Sultan Kayqubad admired Osman's courage and deeds, and didn't wish to punish him, instead, Osman was sent to Ḥājī Baktāš Walī to consider his matter. Osman was warmly received by the Sufi mystic, who then ordered his release saying: "I have been waiting for someone like him for years". After that, Ḥājī Baktāš Walī wrapped Osman's head with the same Turban associated with Sufi sheikhs, and sent him back to Konya with a message to the sultan, asking that Osman to become the Kayı Emir. Thus, Osman became the clan's leader.[35]