Possibly a product of immigration. I know a guy from the US whose surname is "Supernaw". He told me that the original surname might have been a French one, something like "Surprenant", which the English-speaking immigration officials wrote down as "Supernaw". You can imagine how the conversation went right?

Something similar might have happened here, maybe an Eastern European surname like (completely made up example) "Godenov" got written down by English officials as "Goodenough".