Thank you very much for the information you have sent me. Sorry to be so long answering, I was away on holiday.
I do not yet have a DOB for JGW - the family in Taunton (England) were Nonconformists and I need to get over to Somerset to check the records available. He was possibly the child of an earlier marriage (George Williams m Abigail Summers in Nov 1763 (C of E) but children baptised in a Nonconformist church. I need to look for an earlier marriage in the hope of tracing bap of JGW. So some way to go yet!
Thanks again, Lynn