Hugh I, Viscount of Châteaudun

Hugues (died 989 or after), Viscount of Châteaudun, son of Geoffrey I, Viscount of Châteaudun, and Ermengarde. Virtually nothing is known about his life.

Hughes married Hildegarde du Perche, daughter of Hervé I, Lord of Mortagne-au-Perche and Count of Perche, and Mélisende. They had four children:
 * Hugues II de Châteaudun, 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
 * Daughter (name unknown), married Albert II de la Ferté-en-Beauce, son of Albert I de la Ferté-en-Beauce and Godehildis de Bellême.

Hughes was succeeded by his wife Hildegarde, as Viscountess of Châteaudun, upon his death. It is likely that their son Hughes I assumed the role of Viscount of Châteaudun when he reached the age of maturity.