Peter III of Aragon

Peter III
Detail from the Nuova Cronica
King of Aragon and Valencia Count of Barcelona
Reign	27 July 1276 (1276-07-27) – November 1285 (1285-11)
Predecessor	James I
Successor	Alfonso III
King of Sicily (jure uxoris)
Reign	4 September 1282 (1282-09-04) – November 1285 (1285-11)
Predecessor	Charles I
Successor	James I
Co-ruler	Constance II of Sicily
Born	c. 1239 Valencia, Aragon
Died	November 1285(1285-11-00) (aged 45–46) Vilafranca del Penedès, Catalonia, Aragon
Burial	Santes Creus
Spouse	Constance II of Sicily ​ ​ (m. 1262)​
Issue more...	Alfonso III, King of Aragon James II, King of Aragon Elizabeth, Queen of Portugal Frederick III, King of Sicily Yolande, Duchess of Calabria
House	Barcelona
Father	James I of Aragon
Mother	Violant of Hungary

Peter III of Aragon (In Aragonese, Pedro; in Catalan, Pere; in Italian, Pietro; c. 1239 – November 1285) was King of Aragon, King of Valencia (as Peter I), and Count of Barcelona (as Peter II) from 1276 to his death. At the invitation of some rebels, he conquered the Kingdom of Sicily and became King of Sicily in 1282, pressing the claim of his wife, Constance II of Sicily, uniting the kingdom to the crown.