One Hysterical Night (1929)

The scheming aunt and uncle of William Judd heir to the family fortune persuade him to pose as Napoleon at a fancy masquerade ball but they are actually having him committed to an insane asylum Since all the other inmatesattendees think they are historical figures such as Robin Hood the Duke of Wellington Paul Revere William Tell Salome Robinson Crusoe Sherlock Holmes and others it takes a while for Judd to separate the wheat from the chaff and prove he is not deranged His quest becomes more urgent when he falls in love with a nurse named Josephine who does not think she is Napoleons Josephine but is convinced Judd thinks he is Napoleaon