Arudj Barberousse
The Spaniards ordered Abu Zayan, whom they had appointed the new ruler of Tlemcen and Oran, to attack Oruç Reis overland, but Oruç learned of the plan and pre-emptively attacked Tlemcen, capturing the city and executing Abu Zayan in the Fall of Tlemcen (1517). The only survivor of Abu Zayan's dynasty was Sheikh Buhammud, who escaped to Oran and called for Spain's assistance.