Hi Buzz,
Would love t oknow how you connect back to Walter, and get info from Walter's death cert. I have his marriage cert, and am happy to share info therein.
I'm still not convinced that the marraige of William to Charlotte Cawthorn is the right one - Still too many imponderables (unless anyone can point out to me otherwise): From census ages Charlotte would have been 17 at the oldest at the tiem of this marriage, also why would they then wait so long to have children, and if Charlotte was indeed from London why marry in Brighton? Also there was a 'Noble' family of Brighton at around the same time.
I'll PM you my e-mail address and if you'd like direct descendant report for Walter as I currently have it, and Marriage info I can send it you.
Cheers,
Mark