All times in UTC ·
Dashed edge = started before, or continues beyond, this day
Events on Wednesday 11 August 1137 1
1137Betrothal uniting Aragon and BarcelonaDynastic union forming the future Crown of AragonKing Ramiro II of Aragon betrothed his infant daughter Petronila to Ramon Berenguer IV, Count of Barcelona, who took the title Prince of Aragon and governed the kingdom in her name. Sealed in August 1137, the agreement joined Aragon and Catalonia into a single dynastic union that grew into the Crown of Aragon.