Perhaps. I know it is a last name in France but my great-grandmother lived in what is now northern Belarus and had either Polish, Lithuanian or Belarusian heritage (they were poor farmers so no fancy stuff was going on there haha). Unfortunately after the war all official records available were issued by soviets and therefore written in Cyrillic and if it was originally a French name it would have been transcribed phonetically and not this way. So in Polish records it would have ended up being something like Żyria or however it's pronounced in french (much the same way we now call Chopin - Szopen
). The transcribing back from cyrillic though was at the discretion of the bureaucrat so i.e. my grandfather chose to spell it Giriat but his sister in her documents had "mother's name" listed as Girjat since these two are pronounced the same way in Polish, and how would they know how their most likely illiterate mother would spell it.
So yeah, wouldn't it be fancy if it was a french name
the chances are pretty slim though
But thank you for your help! If you know how French people would pronounce it, I'm eager to find out!