Bertrand III of Baux, Count of Andria, Montescaglioso, and Squillace, Lord of Berre, Senator of Rome, Captain-General of Tuscany, and Justiciar of Naples, was born in August 1295 at Andria, Italy to Bertrand II of Baux and Berengaria of Andria. He married, as his first wife, Beatrice of Anjou, daughter of King Charles II of Naples, in 1309; she died c. 1321. His daughter was:Marie des Baux, who married Humbert II of Viennois