1420 Joanna, queen of Naples, adopts Alfonso on condition of his defending her dominions against the duke of Anjou, which he does with success.
1423 Joanna quarrels with Alfonso and adopts Louis of Anjou in his place.
1425 Death of Charles III of Navarre. He is succeeded by Blanche and her husband Juan, brother of Alfonso of Aragon.
1432 Juan appointed regent of Aragon. Alfonso sets out to recover Naples.
1435 Joanna of Naples dies, bequeathing her kingdom to René of Anjou. Alfonso besieges Gaeta, but is defeated in a naval battle. Himself, the king of Navarre, and his brother Henry become the prisoners of the duke of Milan, who immediately releases them. Don Pedro of Aragon takes Gaeta. In the next few years Alfonso makes himself master of the kingdom of Naples.
1442 The office of justiciar declared tenable for life. Blanche of Navarre dies. Juan retains the title of king of Navarre, while her son, Charles of Viana, becomes ruler.
1443 Ferdinand, Alfonso’s illegitimate son, recognised as heir of Naples by Pope Eugenius IV.
1447 Juan of Navarre marries Juana Henriquez and subsequently appoints her co-regent of Navarre. She quarrels with Charles of Viana.
1452 Battle of Aybar. Juan defeats and captures Charles. Reconciliation of Juan and Charles. Birth of Juan’s younger son, Ferdinand the Catholic.
1458 Death of Alfonso V. Aragon, Sicily, and Sardinia pass to the king of Navarre, Juan II. Charles of Viana refuses to supplant Ferdinand of Naples.