William I of Dampierre (1130-1161) (1130–1161) Parents Guy I of Dampierre Helvide of Baudémont Children Helvide de Dampierre Elisabeth de Dampierre Odette de Dampierre Guy II of Dampierre Siblings Helvid of Dampierre Agnès de Dampierre-sur-l'Aube Guy de Dampierre Anseric III of Montréal Partners Ermengarde de Mouci Ermengarde de Toucy