Jonah, a fisherman. Oh, the irony. (Reference: Book of Jonah.)
So.. Simon the Fisherman, basically?
EDIT -
Everything about Simon is really interesting. A lot of things Jesus said about him as metaphors were true literally. For example, Jesus said "Upon this rock (again, Cephas/Cepho) I will build my church", and Peter's bones are buried beneath the Sistine Chapel.