Hi, you'll find several citations to old texts containing the word fuck scattered throughout this thread:

• My mom doesn't like the movie "The Revenant" because she claims words like "Shit" and "Fuck" weren't in an early 19th century man's lexicon. When did these words enter our lexicon?

edit: Note that in the TV series, they're speaking Modern English, whereas no-one would've been speaking that in Ancient Rome. Here are a few other posts you may find interesting:

• Why do American movies about Ancient Rome tend to give Romans a British accent? How long has this been a practice? - re some reasons that movies/tv series are produced in English rather than the languages actually spoken during the time depicted in the story, and the significance of various accents that are used

• Who spoke Classical Latin? How far down the social hierarchy did it extend? - some discussion on what languages were spoken in Ancient Rome