I saw this on someone else's website that listed tips on planning family reunions: make up your own words to the either the tune of "My Country Tis of Thee" or "Battle Hymn of the Republic". For instance, if you use the latter, the refrain would be something like "Glory, Glory, to the [sur-names]", or "Glory, Glory, we are [sur-names]".

http://www.geocities.com/~wallyg/reunions.htm

Georgia Walker-Adams