George Washington met recently widowed Martha Custis by chance at dinner at the home of a mutual friend.

Herbert Hoover got to know Lou Henry, whom he had briefly met previously, at a dinner given by a teacher at Stanford University, where they were students.

Jack Kennedy was "fixed up" with Jacqueline Bouvier at a dinner given by a mutual friend.

Ronald and Nancy Reagan sort of fit into this category. As President of the Screen Actors Guild, Mr. Reagan was working on a problem for fellow actress Nancy Davis. He suggested dinner to discuss the matter.