Further to sian's points about Welsh names, in rural areas it's usual for someone to have their name of their farm or holding. For example, everyone knows our boy as Jack Heolas locally, and his best friends are Llir Ty Gwyn and Dyfed Blaenwaun. Which is very helpful, as everyone around here is either a Morgan or a Davies! If you were to ask someone where Llir Morgan or Dyfed Davies lived, they'd probably stare are you blankly and admit they didn't have a clue.