I'm now a little confused about your time line as it relates to the Will of Simon, proved 10th June 1762.
Are you suggesting that Richard (nephew and the main inheritor in the will) is the son of one of Simon's brothers?
If so, Richard, nephew was b 1769 so he was not alive in 1761/62 when the will was dated.
The will also mentions Edward, son of the said Richard. He must have also been alive in 1761/1762
Could you clarify the generations please?
Gadget