Who dated NN de Ansa?

John II (Spanish: Juan II, Catalan: Joan II, Aragonese: Chuan II and Basque: Joanes II; 29 June 1398 – 20 January 1479), called the Great (el Gran) or the Faithless (el Sense Fe), was King of Aragon from 1458 until his death in 1479. As the husband of Queen Blanche I of Navarre, he was King of Navarre from 1425 to 1479. John was also King of Sicily from 1458 to 1468.