A disciple (halife) of Emir Sultan of Bursa, traditionally dated to the late 14th–early 15th century and regarded as the spiritual founder of Burhaniye (formerly Kemer). He is said to have overseen the building of the Koca Mosque and endowed a medrese, bathhouse and shops as vakıf. His tomb in the Kocacami quarter holds two sarcophagi, his own and that of his son Hasan Çelebi. (Sources: Kültür Envanteri; Engin Beksaç, Tarihin Işığında Burhaniye)