The Chronicle of Alberic de Trois-Fontaines names "filium unum Philippum…et filiam unam Mariam" as children of "Philippus [rex]" and "Mariam filiam ducis Meranie et marchionis Histrie", and in a later passage records their legitimation.
Comte de Boulogne et de Dammartin (by right of his wife) May 1210. He was invested as Comte de Mortain et d’Aumâle in Feb 1223 by his father. He was confirmed as Comte de Clermont-en-Beauvaisis, de Mortain, et d'Aumâle in Feb 1224 by his brother King Louis VIII.
Philippe was killed in a tournament. The Chronica Andrensis records the death in 1233 of "comes Boloniensis Philippus…regis Philippi filius" and his burial "apud Sanctum Dyonysium iuxta fratrem et patrem suum". The necrology of the abbey of Vauduisant records the death "XIV Kal Feb" of "Philippi comitis Bolonie". The necrology of La Cour-Dieu records the death “XV Kal Feb” of “Philippi comitis Bononiæ”. 1
Research Notes: