Hugh I, Count of Dammartin
Hugh I, Count of Dammartin and Seigneur de Bulles, son of Manasses, Count of Dammartin, and Constance of France. Hugh's maternal grandfather was Robert the Pious, King of France, and his paternal great-grandfather was Hilduin I, Count of Montdidier.
Hugh married Rohese, sister of Ascelin, Seigneur de Bulles, and they had four children:
- Pierre, Count of Dammartin
- Basilie, founder of the Priory of Saint-Leu d’Esserent
- Adela, married first Aubry de Mello and second Lancelin II de Beauvais, Seigneur de Bulles, son of Lancelin I de Beauvais.
- Eustachie de Dammartin.