Hi Sherree,
This is Alexander McKay and family in 1841, living in Kilmorack (no specific address), Inverness:
Alexander MCKAY 35 Blacksmith born outside census county
Helen MCKAY 30 born Inverness-shire
William MCKAY 10
Elizabeth MCKAY 8
Helen MCKAY 8
Elspet MCKAY 6
James MCDONALD 60 born outside census county
William BAIN 20 Smith apprentice born ouside census county
I have some births which I think I got from IGI:
William born 9 OCT, bap 18 OCT 1829 in Kirkhill, Inverness
Elizabeth bap 16 JUN 1832 in Kilmorack
Helen bap 31 JUL 1835 in Kilmorack
Eppy bap 11 FEB 1838 in Kilmorack
Mary bap 21 AUG 1841 in Kilmorack
I guess the James McDonald in the census could be Helen's father, but I never checked this out.
Alexander McKay had an illegitimate daughter, called Sarah (Sally), with Ann McDonald, around 1828. I've never found a link between Helen and Ann McDonald, and that's why I didn't search deeper into Alexander.
I'll see if I have something on the other couple, John McKay and Margaret Henderson.
Cheers,
Francisco