Sure -- though if you actually want to make the senator former-owner a governor (proconsul) he will possibly have had to be consul first (I think it depends on the province). And that means you can actually make him a real person if you want since we know who all the consuls (https://en.wikipedia.org/wiki/List_of_Roman_consuls) were.)

Even if he stays in Italy he can pick up Latin, Greek, probably Oscan and Umbrian, Etruscan if it's not dead yet (and I don't think it is). Not sure about the prevalence of Gaulish outside Gaul. You probably can't appoint the owner governor of Egypt, because Egypt had special rules (and was not a province until Augustus, I don't think)... so Egyptian's out...