I don't know if the developers of the game did this on purpose or not. Perhaps they envisioned a version of the Gaunt family from a time when their name and reputation still had weight, but if you do the simple math of when Hogwarts Legacy actually takes place, 1890, it forces you to realize a few important details about Ominis Gaunt as a character:

The most important detail is that he would be an immediate contemporary of Marvolo Gaunt, the grandfather of Lord Voldemort; very likely his own brother, or perhaps a first cousin, but we know for sure that they were alive at the same time and would have known each other. This is very interesting to me, first of all, because Ominis is presented in the game with a very aristocratic presentation in both his speech and his appearance, not to mention his tendency to drop his family's name as leverage.…