Edmond Modeste Lescarbault (1814, Châteaudun - 1894), was a French doctor and an amateur astronomer, best remembered for his 1859 observation of the non-existent planet Vulcan.
Nicolas Chaperon (Châteaudun, bapt. 19 October 1612 — Lyon 1656) was a French painter, draughtsman and engraver, a student in Paris of Simon Vouet whose style he adopted before he was further matured by his stay in Rome (1642–51) in the studio of Nicolas Poussin.
He inherited some possessions in the region of Châteaudun and some historians have retrospectively called him "Count of Châteaudun."
In the 1230s, in order to settle with Alice, Theobald IV had to sell his overlordship over the counties of Blois, Sancerre, and Châteaudun to Louis IX of France.
In 1504 he was a canon and priest at the chapel in Châteaudun, northwest of Orléans and southwest of Chartres.