Ebu Bekr b. Bahrâm Dımışkî (d. 1691) was born in Damascus where he received his education. He seems to have been attached to Köprülüzade Fâzıl Ahmed Pasha while the latter was governor of Damascus and to have followed him to Istanbul in 1661. Being well versed in mathematics and geography, he completed his medrese curriculum in Istanbul and was a teacher (müderris) there for twenty years, beginning in 1669. In 1685 he played a pivotal role in completing the translation of Willem Janszoon Blaeuw’s Atlas Maior, commisisioned in 1675 (he did not know Latin but he made several additions and improvements). He also completed Kâtib Çelebi’s Cihânnümâ, providing additions as well as the maps which were later used in İbrahim Müteferrika’s edition (1732).