Philip I, Duke of Brabant (born 1404)

Philip I, also known as Philip of Saint Pol, was the younger son of Anthony, Duke of Brabant and Jeanne of Saint-Pol. He succeeded his brother John IV as Duke of Brabant in 1427, while he had inherited Saint-Pol and Ligny as an appanage on the death of his maternal grandfather, Waleran III of Luxembourg, Count of Ligny, in 1415.