Hi Bryan,
I am a descendant of John Cameron UEL 1725-1834 and Lady Mary Cameron. I have their children listed as Donald, Alan, Alex, Susan, Hugh, Grace, Janet, John, (my line), and Christie( your line?) All that I know about Christie is that she d. 1847 and was married to Donald Cameron with my notes on her Donald of possibly being from the "Caribou" branch of Camerons.
Perhaps we could trade information.