Thanks MAJM and JUDB for all that intriguing stuff.
I'm afraid you're right, MAJM, and that, failing a windfall (perhaps via Gloucestershire FHS?), the odds are that I will probably never know if the transportee was my direct ancestor. Too many damn Richards.
Despite this hiatus, the good news is that it's well established that the origin of all the Winstone, GLS HAVILANDs was from Poole, DOR. They, in turn, were an offshoot of a prominent family in Guernsey, CI, and that lot started off from the Cotentin peninsula, F.
Cheers.