The name of the Château is derived from the Latin word falise (Cliff, French: falaise)[1] because of its position close to the top edge of a steep declivity of the valley sides of the river Meuse at the foot of which is the city of Namur. Just south west of the Château the steep side of the Meuse valley is cut by the Houyoux, a tributary of the Meuse, which has created a smaller valley in the steep declivity of the Muse valley. The Houyoux is used by the land transport routes from Gembloux and Namur, to descend into the Meuse valley from the plain above.
Reiffenberg, Frédéric Auguste Ferdinand Thomas, Baron de (1844), "Falize (Liebiert délie), 232", Monuments pour servir a l'histoire des provinces de Namur, de Hainaut et de Luxembourg (in French), vol.1, M. Hayez, p.658{{citation}}: CS1 maint: multiple names: authors list (link)
Further reading
Farcy, Philippe (November 2005), 100 Châteaux de Belgique, connus et méconnus (in French), vol.4 (Apartéed.)
Douxchamps, José (2002), Répertoire des châteaux de Wallonie (in French)
Douxchamps-Lefèvre, Cécile (2002), Châteaux de la province de Namur (in French)