I suspect that Singleton was a family surname, but haven't yet managed to
prove it. Some others which might be surnames carried over are Green, Davis,
and Harris. These are all names of brothers of Samuel Singleton, all of which
carried on for at least a generation after that. Perhaps if I were to
follow some Singleton lineages I might find either a Chapman or a Storey marriage
which would lead me to Samuel. Of course, that is the fun of research -
chasing the answer to a puzzle!
Rupert