Niccolò Acciaioli

Niccolò Acciaioli (1310–1365) was a Florentine banker's son who rose to be grand seneschal of the Angevin kingdom of Naples. Sent to Naples in 1331 on family business, he was knighted by King Robert and became the confidant of the exiled Latin empress Catherine of Valois, whose son Louis of Taranto he helped to reconquer Achaea; in 1358 he was made lord of Corinth.

The family bank collapsed in 1345, yet in 1348 he became grand seneschal. He arranged Louis's marriage to Queen Joanna I and, after Louis died in 1362, defended her against rebel barons.

A friend and patron of Petrarch and Boccaccio, he founded the Florence Charterhouse, where he was buried. He died in Naples on 8 November 1365.