A 15th–16th century Sufi born in Mudurnu, affiliated with the Halvetiyye order through Habib Karamani. He is known for Gülşen-i Tevhîd, a verse work on the stations of divine unity, and was esteemed by the İsfendiyaroğulları. He died in 913/1507 in Mudurnu; his tomb stands in the Halveti lodge within the courtyard of the Kanuni Sultan Süleyman Mosque. (Sources: TDV 'Dâvûd-i Halvetî'; Türk Edebiyatı İsimler Sözlüğü)