Héloise was the daughter of Hugues IV de Châteaudun and Marguerite. The date and place of her birth have not been found.
Héloise de Châteaudun
Hugues IV de Châteaudun (c1135-c1180)
Geoffroy III de Châteaudun (-1150)
Hugues III de Châteaudun (-1110)
Agnès de Fréteval
Marguerite
Silvestre