Abu-l-Hasan Ali ibn Ruburtayr

Abu-l-Hasan Ali ibn Ruburtayr or Reverter (? - al-Umra, Tunisia, 1187) was the younger son of Reverter I viscount of Barcelona, and a Muslim Catalan mercenary leader. He left the Christian faith and territories, and converted to Islam. His Christian name is unknown.

When his father died in 1142 fighting the Almohads, he became leader of the Christian army of Tashfin ibn Ali, the Almoravid sultan of Morocco. In 1146 the new sultan Abd-al-Mumin ibn Ali forbade Christians from remaining in his domains. Then he converted to Islam and took the Arabic name.

With the fall of the Almoravids, he then served the Almohads. In 1183 the sultan Yaqub al-Mansur sent him to Majorca for taking the island from the Banu Ghaniya, but he was captured by the Almoravid admiral Ali ibn Maymun, who was positioned against the Almohad rule. Ibn Ruburtayr succeeded to escape and to turn the island in favour of his master, until he placed a sovereign submitted to the Almohads on the throne. Then he left Majorca and returned to Morocco, where he was executed in 1187 after he fell at the hands of the Banu Ghaniya.