Hildouin III, Count of Ponthieu 935-981 (b. 0933) Parents Mathilde van Vlaanderen, Comtesse de Boulogne William I, Count of Ponthieu Children Hugh I, Count of Ponthieu Siblings Arnulf II, Comte de Boulogne Partners Hersende 'la Pieuse' de Ramerupt, Comtesse d'Arcis