Dursun Nuri Feyzi Güven (Çalekli Hacı Dursun Efendi)

Known by the village of Çalek (Sıraağaç) in the Of region of Trabzon where his family had settled. A leading Republican-era müderris (madrasa teacher) and Naqshbandi sheikh, he taught the religious sciences for many years in the Black Sea region, especially around Of and Çaykara, training numerous students including several well-known scholars. He died in his village on 22 February 1977.