Hildegarde, Viscountess of Châteaudun

Hildegarde of Perche (died 14 April 1005 or later) was daughter of Hervé I, Count of Perche, and his wife Mélisende. It is believed that she was a descendant of Adelaud de Loches, grandfather of Roscille de Loches, wife of Fulk I the Red, Count of Anjou. Hildegarde became Viscountess of Châteaudun upon the death of her husband Hugues I Viscount of Châteaudun.

Hildegarde and Hugues had four children:
 * Hugues II, Viscount of Châteaudun and Archbishop of Tours
 * Adalaud, Seigneur de Château-Chinon
 * Melisende, Viscountess of Châteaudun, married Fulcois, Count of Mortaigne, son of Rotrou, Seigneur de Nogent.
 * Unnamed Daughter, married Albert II de la Ferté-en-Beauce, son of Albert I de la Ferté-en-Beauce and Godehildis de Bellême.

Hildegarde was succeeded by her son Hugues II as Viscount of Châteaudun when he reached the age of maturity.