Appendix Q — Castles Built by Henry I.
The castles, which according to Robert de Monte, Henry I. built altogether [ex integro] were Drincourt, Chateauneuf-sur-Epte, Verneuil, Nonancourt, Bonmoulins, Colmemont, Pontorson, St Denis-en-Lyons, and Vaudreuil. Many of these may have been wooden castles; Chateauneuf-sur-Epte almost certainly was; it has now a round donjon on a motte. The “Tour Grise” at Verneuil is certainly not the work of Henry I., but belongs to the 13th century.