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The Crown of Aragon originated in 1137, when the Kingdom of Aragon and the County of Barcelona (with the County of Provence, Girona, Cerdanya, Osona and other territories) merged by dynastic union upon the marriage of Petronilla of Aragon and Raymond Berenguer IV of Barcelona ; their individual titles combined in the person of their son Alfonso II of Aragon, who ascended to the throne in 1162. This union respected the existing institutions and parliaments of both territories. The combined state was initially known as "Regno, Dominio et Corona Aragonum et Catalonie", and later as "Corona Regum Aragoniae", "Corona Aragonum" or simply "Aragon". This was due to the reduction of Catalan influence, the renunciation of the family rights of the counts of Barcelona in Occitania, and the extinction of the House of Barcelona in 1410. Consequently, the monarchs denominated themselves "de Aragon", and Aragon became prominent as an Iberian kingdom linked to the House of Jiménez which ruled over Navarre (905–1234), Castile, Leon and Galicia (1035–1126) and Aragon (1035–1137).
Raymond Berenguer IV