Yes, I've been looking at the same possibility. I can't understand though the connection between The Rev. Edward having so much property in Caron, Anglesey and Lledrod. I notice that they are all stated as 'Freehold' although with so much money around him, some may have been investment assets.
When a David Richards crops up in our research, one side of my brain shuts down; if you add an additional Vicar then the whole thing grinds to a stop.
We never really had a close look at the Strygos David, (probably due to the lack of a will for him) and now we're desperate for some positive link to Edward, John and James, and now, Jane.
In the last note we have for bryn Issaf we have a Thomas Richards and his wife, Jane. The Thomas may be the brother of David, (due to his age), named after their father, Thomas, and has nothing to do with our main family search. We know something of David and he is the likeliest culprit. As you said, he was still young enough to father those children but he may have had a son called David... he would be a more interesting subject. What make me uneasy about David and Letitia being the parents is the huge gap between their marriage in 1737 and the birth of their children.
92% of Richards marriages produce a child in the first year ... none have waited 20 years.
Is there another David out there?
regards from Peter.