http://www.houseofnames.com/ maybe you can find it here, what sometimes happens is years ago surnames etc were sometimes spelt different. my grandfathers first name was John, but when he past away i found out that is name on his birth certificate was Jack, apparantly in the old days jack was the john if you get what i mean. its like Robert being Bob example take a surname like Smith , this could have been written smythe, smiff, symthe.