Hello Elizabeth, As you can see my name is TINA FETHON. I too have had problems finding the origin of the FETHON name. I have traced back to my great great grandfather JOHN FETHON who was born in Scotland around 1924. He married Ann (McAffie -I think was her maided name!) They had 10 children finishing with GEORGE in 1870 who was my great grandfather.
I am trying to get further back from this but have come to a halt because I cannot find John in the Scottish archives on-line.
If this information is any help to youplease let me know, and if there is any more information I may have that could help you I'd be happy to send it on.