Margaret II, Countess of Flanders Countess of Flanders (1202–1280) (1202–1280) Parents Marie of Champagne Baldwin I of Constantinople Children Jeanne of Dampierre Baldwin of Avesnes John I, Count of Hainaut John I of Dampierre William II, Count of Flanders Guy Siblings Joan, Countess of Flanders Partners Bouchard IV of Avesnes William II of Dampierre
