Francis of Baux
Francis of Baux (c. 1330–1422) was the first duke of Andria and the first noble raised to ducal rank in the Kingdom of Naples. In 1348 he married Margaret of Taranto, sister-in-law of Queen Joanna I, and governed Naples when the queen fled to Provence.
From 1373 he waged civil war against Joanna over the Taranto inheritance; stripped of his lands, he took refuge at Avignon and was restored only in 1381 under Charles III. He died around 1422.