I knew a guy named
Gareth, but everyone pronounced it
Garth. I don't know if that's what his parents intended or not, but that's what everyone called him. I always rather liked the name. I like both
Gareth and
Garth. I guess because of
Garth Brooks,
Garth on
Wayne's World, and the Gareth(Garth) that I knew, I've never thought of it as an unusual name.