Christmas Vacation’s Griswold Family Tree Explained

National Lampoon’s Christmas Vacation expanded the Vacation franchise’s ensemble by introducing audiences to the larger Griswold family tree. John Hughes, who wrote the first Vacation film and co-wrote the second one (and also wrote the original Lampoon story that the franchise is based on), returned to pen the script for Christmas Vacation. This holiday-themed threequel imagines a disastrous Griswold family Christmas with a burnt tree, an overcooked turkey, and pesky lights that won’t go on when Clark wants them to.