The Treaty of Villeneuve (1372) was the definitive agreement that ended the dispute between the House of Anjou and the House of Barcelona over the Kingdom of Sicily that began ninety years earlier in 1282. Its final form was approved by Pope Gregory XI in a bull issued at Villeneuve-lès-Avignon on 20 August 1372, and it was ratified by Queen Joan I of Naples and King Frederick IV of Sicily[a] on 31 March 1373 at Aversa, in Joan's kingdom, in front of the papal legate, Jean de Réveillon, Bishop of Sarlat.[1]
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