The Tiffany Problem: people can't use the name in medieval or historical fiction because it sounds like a modern name, despite the fact that it was used as early as the twelfth century.

Usually, this paradox is specific to names; however, it's also worth noting that at that time, we also essentially had the technology and extant ingredients to make hamburgers or pizza. (Ketchup isn't exactly an ESSENTIAL component of burgers, but otherwise, yeah.)

as someone with a character named Tiffany in a medieval style setting, i feel this personally

The Tiffany Problem

‘The Tiffany Problem’ is a term coined by the author Jo Walton to describe the tension between historical fact and the popular perception of history. No one would believe that a woman in the Middle Ages could be named Tiffany, yet it was a real medieval name.

Please share your examples of the Tiffany problem!

–Allison was also a woman’s name in the Middle Ages (and apparently considered a “sexy” name!)

–The term “people of color” was used in the 18th century (though usage was slightly different: it was used for people of mixed race, black and white)