Constance of Aragon (Catalan: Constança d'Aragó; 1343 – 2/18 July 1363), was the first Queen consort of Frederick III the Simple.
On 8 February 1351 at Perpignan, a betrothal between Constance and Louis I of Anjou, son of King John II of France, was performed.
On 11 April 1361 at Catania, Constance married King Frederick III of Sicily.
[1] They had one daughter, Maria (2 July 1363 - 25 March 1401),[1] who succeeded her father as reigning Queen of Sicily[3] in 1377[4] and married Martin of Aragon.
In 1363 Constance died in Catania, Sicily, either from the plague,[1] or following childbirth complications.