Constance II of Sicily
Constance II of Sicily (c. 1249–1302) was the only daughter of Manfred, King of Sicily, and Beatrice of Savoy. On 13 June 1262 she married Peter, eldest son of James I of Aragon.
After Manfred fell to Charles of Anjou at Benevento in 1266, she inherited the Hohenstaufen claim to Sicily. Queen consort of Aragon from 1276, she ruled Sicily alongside Peter after the Sicilian Vespers of 1282 until his death in 1285.
Peter and then their sons claimed Sicily in her right in the ensuing war, which divided the kingdom between their heirs and those of Charles. She died as a nun in Barcelona on 9 April 1302.