Giacomo Caldora, born in Castel del Giudice in 1368, married Rita Cantelmo; his possessions included Anversa, Fallo, Monteodorisio, the duchy of Bari, the marquisate of Vasto, many urban baronies and some counties (among which Agnone, Palena ecc.). In short, he owned a total of about 200 urban feuds, besides farmhouses, and the real estate benefits of the harbor office, of the customs office, etc.

The office of the Gran Contestabile alone gave him income of 8000 ducates, monthly.

There are writings stating that he himself fortified Campo di Giove in 1421, and that in that very year the castle took on that name.

Giacomo did not want to take on any titles, contenting himself with just his name; but he obviously had higher aspirations, and indeed would not tolerate anybody above him.

When he died in 1439, fights between the Angioini ed Aragonesi were already taking place.

Giacomo Caldora was being buried in the abbey of morronese, when Sarro Brancaccio arrived, sent by King Renato d'Angiņ who, upon sending his condolences to Antonio, his son, presented him with a diploma of investiture of all his paternal possessions.

Antonio therefore took sides with the Angioini in the fight against Alfonso V Il Magnanimo, who had come from Spain (Aragonese King of the Reign of Napes). Overcome by them in Sessanio and Carpinone on June 28th, 1442, the king, nicknamed "The Magnanimous" spared him his life, freedom and the entire feud, composed of the counties of Pacentro, Palena, Monte di riso (Monteodorisio), Archi, Trivento, with 17 lands.

Muratori writes that Antonio was freed with "four small fortresses granted to him in Abruzzo".

King Alfonso was succeeded by Ferrante I in 1458, but Antonio Caldora continued to side with the d'Angiņ. These had various successes, especially in the battle of Sarno (currently in Campania) of 1460. However the Aragonese managed to get the upper hand and re-obtain the entire reign. The battle of Troia (currently in Puglia), in 1462, was decisive for the Aragonese, and Giovanni d'Angiņ fled to France.