hi!
it s took me several times to collect these precious information concerning our name.
Actually it s an old name of celtic world before j.C.there s an island with a legend of a king (carn) in britanny.We localized also in scotland and whales that name,casles and standing stone wich name is cairn from the old irish...
so,don t worry you are probably origin from cornwall or ireland or may be britanny.good luck anyway and enjoy your fairy life!
chris carn