John died in Nicosia on 28 July 1458 and his daughter Charlotte succeeded to the throne. During his rule, Corycus, the only Cypriot stronghold in mainland Anatolia, was lost to the Karamanids in 1448.
John appointed James, Archbishop of Nicosia at the age of 16. James did not prove ideal archbishop material, and was stripped of his title after murdering the royal chamberlain. His father eventually forgave him and restored him to the Archbishopric. James and Helena were enemies, vying for influence over John. After Helena died in 1458, it appeared that John would appoint James as his successor, but John died before he could make it so.
Boustronios, Georgios (2005). A Narrative of the Chronicle of Cyprus: 1456-1489. State University of New York Press.
Letts, Malcolm, ed. (2017). The Pilgrimage of Arnold Von Harff, Knight, from Cologne: Through Italy, Syria, Egypt, Arabia, Ethiopia, Nubia, Palestine, Turkey, France and Spain, which He Accomplished in the Years 1496-1499. Taylor & Francis.
Murray, Alan V., ed. (2006). The Crusades: An Encyclopedia. Vol. 2. ABC-CLIO.
Samson, Jim; Demetriou, Nicoletta, eds. (2015). Music in Cyprus. Ashgate Publishing Limited.