Tom Canty is a poor English boy who bears a remarkable resemblance to Edward, Prince of Wales and son of King Henry VIII. The two boys meet and decide to play a joke on the court by dressing in each other's clothes, but the plan goes awry when they're separated and each must live the other's life.
Not streaming on a subscription service in the US right now.
Starring Mark Lester, Oliver Reed, Charlton Heston, David Hemmings, Ernest Borgnine, George C. Scott, Harry Andrews, Raquel Welch, Rex Harrison, Sybil Danning