Alfonso VI of Leon

Alfonso VI claimed the title 'Imperator totius Hispaniae' (Emperor of all Spain) in 1077, asserting his supremacy over other Christian rulers. This title was used in diplomatic correspondence and reflected his ambition to unify Iberia.

Alfonso VI captured the city of Toledo from the Taifa of Toledo in May 1085. This was a major victory in the Reconquista, as Toledo was a historic capital of the Visigothic kingdom and a cultural center of Islamic Iberia.

Alfonso VI was defeated by the Almoravid army under Yusuf ibn Tashfin at the Battle of Sagrajas (Zallaqa). This defeat halted Christian expansion and forced Alfonso to seek help from other Christian kingdoms, marking a turning point in the Reconquista.

Alfonso VI married Zaida, a Muslim princess from Seville, who converted to Christianity and took the name Isabel. This marriage was a political alliance to secure peace with the Taifa of Seville and strengthen his position against the Almoravids.