Sibille de Montfaucon - Bef 30 Mar 1277 Parents Theodoric III, Count of Montbéliard Alix von Pfirt, Dame de Belfort Children Amadeus, Count of Neufchâtel Henri de Neuchâtel Siblings Richard of Montbéliard Agatha de Montfaucon Marguerite von Mömpelgard Partners Rudolph III of Neuchâtel