Hi Eric,
only the 1841 1851 and 1861 census transcripts from ancestry which show
1841 George/Isable living at Whitton, Morebattle with Joseph, Helen, Margaret, Jane and John
1851 George/Isabella living Ploughland Farm Crailing George 42 b Eckford, and Isabella 40 b Minto with Helen b Crailing; Margaret, Jane John and George all b Morebattle
1861 Isabella (no George) with Margaret, Jane and John. By 1861 Isabella thinks she was born Lilliesleaf.
The 1851 b Minto matches my guess at which was her brother James in 1851.
There's a James of the right age, born Minto, as a servant with James and Euphemia WALDIE at Linton Mill, Linton.
I take it you've confirmed that this is your Isabella FAIRBAIRN? She survived well into civil reg. so her dth cert should be available.
George however may well have died prior, sometime between 1851 and 1861, most likely at Crailing.
I'd go for the Joseph and Margaret as his parents if you can't find his dth cert to confirm it, an 1813 bap. sounds too late for this George, 1809ish Eckford.