This name is one of those old Welsh ones that were common a few centuries ago, but have since [almost] died out. This is somewhat despicable, because it is Old Welsh and has long since been put in a filing cabinet, and left to shy away from sunlight.The main beauty of this name [like many other Old Welsh names] is the "th" sound, found in Gethin, Gareth and many others. The sound isn't a hard, gutteral "double-t" if you, but more of the same as tee"th".