In 1578, the Saadi sultan Ahmad al-Mansur, contemporary of Queen Elizabeth I, defeated Portugal at the Battle of Ksar El Kebir, beating the young king Sebastian I, a devout Christian who believed in the crusade to defeat Islam. Portugal had landed in North Africa after Abu Abdallah asked him to help recover the Saadian throne. Abu Abdallah's uncle, Abd Al-Malik, had taken it from Abu Abdallah with Ottoman Empire support. The defeat of Abu Abdallah and the death of Portugal's king led to the end of the Portuguese Aviz dynasty and later to the integration of Portugal and its empire at the Iberian Union for 60 years under Sebastian's uncle Philip II of Spain. Philip was married to his relative Mary I cousin of his father, due to this, Philip was King of England and Ireland in a dynastic union with Spain.