Ramiro II of Aragon

Ramiro II, called the Monk (1086–1157), was a son of King Sancho Ramírez of Aragon and Felicia of Roucy who became a monk and abbot. His brother Alfonso the Battler blocked his election as bishop of Burgos.

When Alfonso died in 1134, the Aragonese nobility took Ramiro from the cloister and made him king, while Navarre chose García Ramírez, separating the two realms. He had a daughter, Petronilla, who was betrothed in 1137 to Count Ramon Berenguer IV of Barcelona, uniting Aragon and Catalonia. He withdrew to a monastery soon after, keeping the royal title until his death.