If I Were King (1938)

In 1463, Paris is besieged by the Duke of Burgundy, arch-rival of the king, who is content to sit tight while the poor starve. But there are traitors in Paris, and King Louis goes undercover to find one, thereby meeting Francois Villon, poet, philosopher and rogue. By chance, Villon kills the king's traitor and is ordered to replace him as Grand Constable of France. But there's a catch.