New scenario:
* Charles IV's son by Marie of Luxembourg, Louis, survives his birth in 1324. When Charles IV dies in 1328, he becomes King Louis XI of France and Louis II of Navarre.
* Philip of Valois, the appointed regent, betrothes his daughter, Marie, to the young king, as part of his efforts to keep his ear.
* Charles, Duke of Calabria, still dies in 1328. IOTL, his widow, Marie of Valois, sister of the French regent, gave birth o a daughter, Marie. ITTL, she gives birth to a son, named Robert.
* Charles of Calabria's eldest surviving daughter, Maria (IOTL lived from 1326-1328) survives. King Robert of Naples, as part of his efforts to placate the elder Hungarian branch of the Angevins, arranges a double-betrothal between his grandson and eldest granddaughter, to a daughter and second son (Louis) of King Charles of Hungary, the eldest Hungarian prince, Ladislaus, being already betrothed to Anne of Bohemia.
* Philip of Valois' daughter, Marie, dies unexpectedly in 1333. Philip, determinted to keep his hold on the king, looks for one of his nieces to betroth Louis to. He, with some input from Louis, chooses Joanna, the younger and more beautiful of the surviving Neapolitan princesses.
* In 1343, King Robert I 'the Wise' of Naples dies, and the throne goes to his 14-year-old grandson, King Robert II.
* When the Black Death hits Naples in 1347-1348, King Robert II falls ill and dies. His sister, Maria, becomes Queen for a few months until she too succumbs to the plague, leaving Joanna as Queen. Louis of Hungary is driven out by the discontent and fearful Neopolitans who invite Queen Joanna to return. Louis XI of France wants to claim Naples and Provence by right of his wife, but Louis, and his older brother, Ladislaus, see Naples as their God-given right...
Thoughts?