Pope Athanasius III of Alexandria, 76th Pope of Alexandria and Patriarch of the See of St. Mark. He was known as Athanasius ibn Kalil (البابا أثناسيوس الثالث ابن كليل). His episcopate lasted for eleven years, one month and 18 days from Sunday 9 October 1250 (12 Babah/Paopi 967 AM) to 27 November 1261 AD (The first of Kiahk/Koiahk 978 AM). The See of St Mark remained vacant for one month and 5 days after his death and he was succeeded by Pope John VII of Alexandria. He was buried in Saint Mercurius Church in Coptic Cairo (كنيسة مرقوريوس أبو سيفين).