Can you see wills on line Geoff if you are a member?
I've not seen the will ... I downloaded an index long ago.
Re the death in 1765 ... I suppose it could have been the father who died.
There were a few EWs around with marriages -
Susanna MARSH (wid) Boston 1762
Ann KENDALL Great Carlton 1764
Ann GREY 1783 Haugham
Elizabeth NUNDY 1807 North Elkington
then there's the earlier marriage to an Elizabeth that produced the children in the 1740s.
I suspect there are baptisms that you don't know about.
