Name Prefix:<NPFX> King Of Aragon King Of Aragón and count Of Barcelona (1285-91), son andsuc cessor Of Peter III. He was forced to grant wide privileges to the cortes Of the Aragonese nobles. At first he supporte d theclaim to Sicily Of his brother James (later James II O f Aragón)against Charles II Of Naples. Later, however, he r ecognizedpapal suzerainty over Sicily and pressed James t o abandon hisclaim. He also made war on Castile and on hi s uncle, James I OfMajorca. James II succeeded him.