Who is the older brother of actor/comedian Bill Murray who appeared in the movie Nothing but Trouble?
Nothing but Trouble (1991 film):  The cast featured Chevy Chase, Demi Moore, and John Candy, with Taylor Negron, Raymond J. Barry, and Brian Doyle-Murray in supporting roles. Brian Doyle-Murray:  He is the older brother of actor/comedian Bill Murray, and the two have acted together in several films, including "Caddyshack", "Scrooged", "Ghostbusters II", "The Razor's Edge", and "Groundhog Day".
Brian Doyle-Murray