So much information. Forgot to mention one small item.
Just to conform that there is more than one source (not just the Land Tax) that George Barron was occupier of Birks Farm, Falstone, parish of Simonburn. George Barron & Mary Thompson were married at St Peter's Chapel, Falstone, Northumberland 2nd June 1784, the register (Northumberland Archives) states:
'Banns of Marriage between George Barron of Birks and Mary Thompson both in this chapelry were published on May 11th, 21st, 28th.'
and
'George Barron and Mary Thompson of Birks in the chapelry of Falstone were married in this chapel by Banns this 2nd day of June 1784'.
Finally as we know from the Land Tax that George was occupier of Birks Farm at least from 1784-1791, and we know that George's two sons David & William were born in 1785 & 1786 respectively, we can assume that both David & William were both born at Falstone (despite the fact that David was baptised at Cheeseburn Grange, Stamfordham).
Patrick
