Kate & Leopold (2001)

Factual error: The morning after Leopold and Stuart travel to the present, the two of them are talking about why Leopold followed Stuart to the bridge. Leopold mentions that he was afraid Stuart might be Jack the Ripper, whose first murder was in 1888, twelve years after Leopold's time. (00:17:55)

Leopold: As I see it, Patrice has not an inkling of your affections, and it's no wonder. You, Charles, are a merry-andrew.
Charlie: A what?
Leopold: Everything plays a farce to you. Women respond to sincerity. No-one wants to be romanced by a buffoon.

Trivia: The real Leopold, Duke of Albany, died of hemophilia in 1884 at age 31.