Naples who had rebelled against him. He also supported Bosnian duke, Stjepan Vukčić Kosača, who turned to the king for help in his affairs in Bosnia. Alfonso made him "Knight of the Virgin", but did not provide any troops. On 15 February 1444, Stjepan signed a treaty with the king of Aragon and Naples, becoming his vassal in exchange for Alfonso's help against his enemies—Stephen Thomas and Ivaniš Pavlović (1441–1450) of the Pavlović noble family as well as the Republic of Venice. In the same treaty, Stjepan promised to pay Alfonso regular tribute instead of paying the Ottoman sultan as he had done until then. Alfonso, by formally submitting his reign to the Papacy, obtained the consent of Pope Eugene IV that the Kingdom of Naples would go to his illegitimate son, Ferdinand. He died in Castel dell'Ovo in 1458, while he was planning the conquest of Genoa. At the time, Alfonso was at odds with Pope Callixtus III, who died shortly afterwards. Alfonso's Iberian possessions had been ruled for him by his brother, who succeeded him as John II of Aragon. Sicily and Sardinia were also inherited by John II. Marriage and issue Alfonso had been betrothed to Maria of Castile (1401–1458; sister of John II of Castile) in Valladolid in 1408; the marriage was celebrated in Valencia on 12 June 1415. They failed to produce children. Alfonso had been in love with a woman of noble family named Lucrezia d'Alagno, who served as a de facto queen at the Neapolitan court as well as an inspiring muse. Genealogical records in the Old Occitan Chronicle of Montpellier in Le petit Thalamus de Montpellier indicate that Alphonso's relationship with his mistress, Giraldona Carlino (daughter of Enrique Carlino and his wife, Isabel), produced three children: His successor in Naples, King Ferdinand I of Naples, (born 1423; reigned 1458–1494). (1425–1449) (died 1449, aged around 15 or 16). She had married in 1444 Leonello d'Este, deceased 1450. Leonora d'Aragona, who married c. 1443, Mariano Marzano, Duke of Squillace, Prince of Rossano. Her daughter Francesca married Leonardo III Tocco. Notes References Sources Further reading 1396 births 1458 deaths 15th-century Aragonese monarchs 15th-century Kings of Sicily 15th-century monarchs of Naples People from Medina del Campo House of Trastámara Aragonese infantes Monarchs of Naples Monarchs of Majorca Valencian monarchs Patrons of literature Knights of the Golden Fleece Counts of Barcelona Knights of the Garter Knights of