National Lampoon’s Christmas Vacation is a beloved holiday classic with a multi-generational cast of characters centered around the Griswold family, but how old was Chevy Chase in Vacation? Clark Griswold ( Chase) and his wife Ellen host Christmas at their home. However, no holiday would be complete without unexpected guests, a deranged squirrel, a burning Christmas tree, and a stampeding rottweiler. When Cousin Eddie appears on Clark’s doorstep, not only do the Griswolds have to find extra space for extended family, but they must figure out how to handle Eddie’s idea of the perfect gift – Clark’s boss.

https://screenrant.com/national-lampoon-christmas-vacation-character-actor-ages-comparison/