A Cinderella Christmas Ball (1970)

Chelsea Shaw, a Chicago-based dance instructor whose adoptive parents have long since passed, travels to the small European country of Havenshire over Christmas break in search of her heritage… and maybe even family. Discovering that the only way to get access to information she needs on her quest is via the royal family, she accepts an offer to teach a very reluctant Prince a special Waltz for the traditional Royal Christmas Ball.