Hi Diddy,
I am sure this James Sim, Ploughman, more than fits the bill, born in (1774) married, and died in 1857 aged 73, married say when he was 20 1794? my 2Xs gt grandfather born in Letham in 1809/10 would fit into his family nicely.
Thanks for these lookups, I am very grateful.
#sholto.