Çoban Bey
Çoban Bey (1283–1337) was an Ottoman prince, a son of Osman I, founder of the Ottoman state. He fought in the long campaign that ended with the conquest of Bursa in 1326.
He built a mosque in the captured city. His tomb lies in Bursa's Umurbey quarter, named after him, where the ruins of a madrasa endowed in his name also survive.