Амр ибн аль-Ас
During the Muslim conquest of Egypt the Byzantine fortress held out for about seven months before finally falling in December 640 to the Arab general 'Amr ibn al-'As. The history of this conquest, and of the subsequent rule of the then still Coptic Christian city by the Arabs, is told by John Bishop of Nikiû in his "Chronicle," which survives now only in Ethiopic manuscripts.