I think you might be onto something. My suspicion is that your Nathaniel is the father of my Nathaniel, based on this military census list:
https://www.genuki.org.uk/big/eng/DEV/Exeter/HolyTrinity/HolyTrinity1803where my young Nathaniel is listed with an older Nathaniel and Enos, whom I suspect to be his brother, because 1) he married the sister of my Nathaniel's later wife, 2) my Nathaniel named his second son Enos - and this son was later, with 15, an assistant of an astronomer in Oran.
By the way, the history of my Nathaniels children is surely fascinating, though I do not know much about them. He had at least 2 sons: James (Merchant dabbling in questionable matters, business partner of the famous Jacob Lasry) and Enos, whom I mentioned, and daughters: Elisabeth, Jeanne (married to famous botanist Giles Mumby) and Marie (married to a certain mr. Levy). You can find them in Algerian Newspapers after Nathaniel's death.
Anyway, if Nathaniel (the elder) is my Nathaniel's father, Giles (the GROCER listed below in the census list) would be my Nathaniel's uncle. I am wondering if this is the same Giles from this adventure account?:
https://spink.com/lot/20025000567Also, based on the content of his letters about the Totnes riots in 1801, I think Giles was importing and selling wheat to Totnes in the early 1800s... So is GROCER just an euphemism for someone more involved in trade?
There is a wealth of information about (a) Giles Welsford, and is very interesting to read about him in the National Archives...
See for example the will of a Giles Welsford, MERCHANT:
https://discovery.nationalarchives.gov.uk/details/r/D229229As I sadly cannot go to Plymouth in the next few months, I could not do more thorough research - but I think I exhausted most of what is to be found online, with the exception of genealogy sites to which I have no access... I would be very grateful for any further information.