Munster, Go Home!

The reason Pat Priest was not used in this film was that "Universal" wanted to build up the career of Debbie Watson. Priest was over 30 at the time though Marilyn was obviously college age. In the film, the character was made to be only 19, another reason they cast the younger Watson. This not only devastated Priest, it also angered most of the fans. Additionally, Watson's career never took off.

It is mentioned that Freddie Munster's father disowned him so the title "Lord Munster" would pass to Herman. In English peerage, a title passes onto the next in line of succession regardless of the previous holder's wishes. Only an Act of Parliament may remove an heir. Freddie's father could leave all the money and land to Herman, but the title would go to Freddie.

Edited into The Munsters' Revenge (1981)