Philip I, Duke of Brabant, also known as Philip of Saint Pol (July 25, 1404 – Leuven, August 4, 1430), younger son of Antoine, Duke of Brabant and Jeanne of Saint-Pol, succeeds his brother John as Duke of Brabant in 1427.
He had already been given Saint-Pol and Ligny as an appanage on the death of his grandfather Waleran III in 1415 at the Battle of Agincourt.