Geoffrey V (Geoffroy V) (died 1218), Viscount of Châteaudun, son of Hugues V, Viscount of Châteaudun, and Jeanne de Preuilly, daughter of Gosbert de Preuilly, Seigneur of Bouchet and Guerche, and Adela de Vendôme.
Geoffrey’s first marriage was to Adelicia de Nevers. Adelicia is listed in Europäische Stammtafeln as Geoffrey’s wife but no heritage is identified. The most likely candidate for her parents are William IV, Count of Nevers, and Eléonore, Countess of Vermandois, although this has not been verified. Geoffrey and Adelicia had nine children:
Geoffrey married secondly Alix de Fréteval, daughter of Urso II, Seigneur de Fréteval, and Grecie de Faye. Urso’s father was a rival of Geoffrey’s ancestor and namesake Geoffrey III. No children are recorded from this marriage.
Upon his death, Geoffrey was succeeded by his son of the same name.