, Turkish adherent of the Ṣūfī order of the K̲h̲alwatiyya [q.v.] and poet in both Persian and Turkish. He was born at an unspecified date at Güzel Ḥiṣār in Aydi̊n, western Anatolia, being connected maternally with the ruling family of the Aydi̊n Og̲h̲ullari̊ [see aydi̊nog̲h̲lu ] and died at Tabrìz in Ād̲h̲arbāyd̲j̲ān in 892/1487.

Dede ʿUmar was the k̲h̲alīfa of Sayyid Yaḥyā S̲h̲īrwānī, the pīr-i t̲h̲ānī or second founder of the Ḵh̲alwatī order, and as head of the Rūs̲h̲anī branch of the order engaged in missionary work in northern Ād̲h̲arbāyd̲j̲ān. He came to…