"F" The Nine Worthies

Interior has 10 rondels with representations of the Crucifixion and the Nine Worthies all on horseback, all with coats of arms except Hector

3 pagan worthies: Hector, Alexander the Great, Julius Caesar; 3 Jewish worthies: Joshua, King David, Judas Macabee; 3 Christian worthies: Charlemagne, King Arthur, Godefroy de Bouillon

The F has been said to be that of Philibert le Beau, Margaret of Austria's second husband, but his name was never spelled with an F. The other hypothesis is that it belonged to François I, e.g., Sauzay, 1861.