Gents,
Very many thanks for getting in touch.
To my acute embarrassment (oops!) - it must have been my excitement at finding RootsChat (!) - I see that in my message I got Eli and Israel the wrong way round. My apologies. So, Peter, you're absolutely right: Eli was Robert & Hannah's grandson, Israel was Phillip & Ann's grandson.
Frustratingly, this still puts me back at square one as it's Robert and Phillip that I'd like to connect 'by blood' so to speak (i.e. in order to make an equivalent connection between Eli & Israel). I can't definitely say they were cousins unless there's a link between them both that goes up to William as the common ancestor. And thanks for the info on William's other children, by the way.
Andrew, in rooting around the CORNWELLs, I also found your Absolom and thought I'd cracked the problem because of all the obviously biblical names: surely they were all brothers or cousins (??), but it's not that simple is it?!
Incidentally, what's your interest in CARTERs? That's my surname.
Thanks again and best regards,
Pete C (alias tidC)