Āq Shams al-Dīn (in Turkish Akşemseddin), Muḥammad b. Ḥamza al-Dimashqī (792–863/1390–1459), Sufi and celebrated physician. He is thought to have been one of the descendants of Shaykh Shihāb al-Dīn Suhrawardī, but it is not clear whether this Shihāb al-Dīn was the ‘Master of Illumination’ (Shaykh al-Ishrāq) or the jurist and Sufi from Baghdad. He was born in Damascus. During his childhood he went with his father to Anatolia, where he commenced his education. After c…