Osman I

Osman I began as the leader of a small nomadic tribe in northwestern Anatolia and became the great founder of the Ottoman Empire, a realm that would endure for over 600 years. The very name 'Ottoman' is derived from his name.

Birth and Leader of the Ghazis

Osman was born around 1258 in Anatolia (modern-day Turkey) as the son of Ertuğrul, the chieftain of the Kayı tribe. At the time, this region was a rugged frontier where the declining Seljuk Turks met the shrinking Byzantine Empire. Following his father's death, the young Osman became the leader of his tribe. With excellent martial skills and great charisma, he gathered the 'ghazis'—frontier warriors fighting on the edge of the Islamic world—under his banner.

The Birth of the Ottoman Beylik

Around 1299, as Mongol attacks caused the collapse of order in Anatolia, Osman declared his territory (a 'beylik', ruled by a chief) as an independent state. Because his lands bordered the Byzantine Empire, he was able to expand his territory and wealth, attracting countless warriors and refugees who heard of his successes. According to a famous legend, the young Osman dreamed of a massive tree growing from his chest and covering the whole world. Wise men interpreted this as a sign that his descendants would one day rule a mighty empire.

The Siege of Bursa and Death

Throughout his life, Osman steadily conquered Byzantine lands and expanded his power. His greatest goal was to capture the important city of Bursa. However, Bursa's walls were incredibly strong, forcing the Ottoman army to lay siege to the city for several years. Ultimately, Osman passed away from illness in 1326, just before Bursa surrendered. Though he died as the leader of a relatively small state, his son Orhan captured Bursa and expanded the territory, ensuring that Osman's name would live on forever as the title of one of history's most powerful empires.