Question: When is Constance Of Aragon, Queen Of Sicily's father's birthday?
Sentence (from "Peter IV of Aragon"): Peter IV (Catalan: "Pere IV"; 5 September 1319 – 6 January 1387), called the Ceremonious (Catalan: "el Cerimoniós"), was from 1336 until his death the King of Aragon and also King of Sardinia and Corsica (as Peter I), King of Valencia (as Peter II), and Count of Barcelona (and the rest of the Principality of Catalonia as Peter III).
Relevant evidence: Yes