Treaty of Marseille

In Episode IX ("Dawn") of Brazilian Mapping's Alternate History of Europe series, after the Italian League put down the Three Rebellions in Provence, Sicily, and the Tlemcen coast, the Treaty of Marseille was drafted and signed on March 23rd, 1506, to formalise the personal union between Naples and Provence.
* "All European monarchs are to recognise King Ferrante I of Naples as the Count of Provence."