Back again.
I have been unable to find any reference to Elizabeth Burch other than her marriage to Jacob Hamblen in 23/Nov/1823.
Jacob reports being widower in 1851, the earliest census I have - 1841 has not got his status bereaved or not, nor plausible Elizabeth. It does make reference to an elderly Elizabeth, I assume his mother.
I would be grateful to gain any 1831 census details please? I think this would clarify things.
[Jacob Hamblens household, Killegrew Street Falmouth] this would be very helpful presently.
Thanks for continued interest.