Charles Martel, Duke of Calabria () is a name and title shared by two short-lived heirs to the throne of the

Kingdom of Naples The Kingdom of Naples (; ; ), officially the Kingdom of Sicily, was a state that ruled the part of the Italian Peninsula south of the Papal States between 1282 and 1816. It was established by the War of the Sicilian Vespers (1282–1302). Until ...

Son of Charles, Duke of Calabria

Charles Martel (13 April 132721 April 1327), was the third child and first son of Charles, Duke of Calabria, heir of

Robert, King of Naples Robert of Anjou (), known as Robert the Wise (; 1276 – 20 January 1343), was King of Naples, titular King of Jerusalem and Count of Provence and Forcalquier from 1309 to 1343, the central figure of Italian politics of his time. He was the thir ...

and Yolande of Aragon and his wife Marie of Valois, a niece of King Philip IV ''le bel'' of France. At the time of his birth in

Florence Florence ( ; ) is the capital city of the Italy, Italian region of Tuscany. It is also the most populated city in Tuscany, with 362,353 inhabitants, and 989,460 in Metropolitan City of Florence, its metropolitan province as of 2025. Florence ...

, his father Charles had survived his only brother Louis. The newborn prince, his sister and his father were the only living, legitimate, male-line descendants of his paternal grandfather,

. Charles also had a surviving daughter, Maria, who would die aged two in 1328. The next-in-line to the throne was Philip I, Prince of Taranto, the son of

Charles II of Naples Charles II, also known as Charles the Lame (; ; 1254 – 5 May 1309), was King of Naples, Count of Provence and Forcalquier (1285–1309), Prince of Achaea (1285–1289), and Count of Anjou and Maine (1285–1290); he also was King of Albania ( ...

. The young prince died only eight days after his birth, in Florence. His death left Joanna again heir to the throne. Joanna eventually became Queen of Naples — a younger sister to the Duke was born after his father died, in 1329.

Son of Joanna I, Queen of Naples

Charles Martel, Duke of Calabria (25 December 134510 May 1348), was the only son of

Joanna I of Naples Joanna I, also known as Johanna I (; December 1325 – 27 July 1382), was Queen of Naples, and Countess of Provence and Forcalquier from 1343 to 1381; she was also Princess of Achaea from 1373 to 1381. Joanna was the eldest daughter of C ...

, fathered by her first husband, Andrew, Duke of Calabria.Goldstone, N. B. (2009). The lady queen: the notorious reign of Joanna I, Queen of Naples, Jerusalem, and Sicily At the time of his birth in

Naples Naples ( ; ; ) is the Regions of Italy, regional capital of Campania and the third-largest city of Italy, after Rome and Milan, with a population of 908,082 within the city's administrative limits as of 2025, while its Metropolitan City of N ...

, Joanna had survived her own brothers and only had a younger sister. The newborn Duke of Calabria and his mother and aunt were the only living, royal, legitimate descendants of his paternal great-grandfather,

. The heir presumptive since was Charles of Durazzo. Charles was betrothed to Joanna of Durazzo, his cousin, in 1347. In February 1348, the little Duke was transferred to

Hungary Hungary is a landlocked country in Central Europe. Spanning much of the Pannonian Basin, Carpathian Basin, it is bordered by Slovakia to the north, Ukraine to the northeast, Romania to the east and southeast, Serbia to the south, Croatia and ...

. The young Duke died only three years after his birth, in

. He was buried in the

Székesfehérvár Basilica The Basilica of the Assumption of the Blessed Virgin Mary () was a basilica in Székesfehérvár (), Hungary. From the year 1000 until 1527, it was the site of the coronation of the Hungarian monarch. After the Ottomans occupied the city in 1543 ...

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References and Sources

{{reflist Dukes of Calabria Capetian House of Anjou Joanna I of Naples Italian royalty who died as children Heirs apparent who never acceded Sons of queens regnant