Philippa of Dammartin noble woman (1226–1281) Parents Marie, Countess of Ponthieu Simon, Count of Ponthieu Children Philippe van Gelre Margareta van Gelre Aleida van Gelre Reginald I of Guelders Siblings Joan, Countess of Ponthieu Agathe de Dammartin Mathilde de Dammartin Marie de Dammartin Partners Raoul II of Lusignan Raoul II, Lord of Coucy Otto II, Count of Guelders
