Abdallah ibn Sa'd ibn Abi Sarh

Abdallah ibn Sa'd ibn Abi Sarh was an Arab commander and governor of Egypt from about 645 to 656 under the caliph Uthman, his foster-brother. In 652 he besieged Old Dongola, capital of the Nubian kingdom of Makuria, but could not take it and concluded the Baqt, a treaty that governed Egyptian–Nubian relations for six centuries. He also led raids into north Africa and commanded at the naval victory over the Byzantines known as the Battle of the Masts.