Hello Alcluith,
Do you know for a fact that Norman and/or Mary lived to adulthood?
If so, all I can figure is that somehow between birth and the first census, Norman and his brother Donald lost their parents and became McNabs, instead of McNeils...
1841 They are living in the household of Flora McKenzie in Kilmuir:
Maligar, Kilmuir, Inverness
Flora McKenzie, 60, Crofter
Mary McCowan, 20
Margt McLeod, 15
Donald McNab, 10
Normand McNab, 15
In the IGI (submitted) Donald is also the son of Donald McNeil and Mary McLeod
There are no McNab children by these names and dates being born in Snizort-- but they could just be missing, of course.
On Scotland's People, there are seven children born in Snizort to Donald M*n* and Mary M*leod. None of these are M*nab*. Two are M*neil: Norman and Donald. One is M*niel: Mary
Four are M*c* but can't figure out what the other one is.
1851 Norman McNab born Snizort abt 1825 is a ploughman in Kilmuir
1861 he is back in Snizort, married, with first child named Donald!
So... not sure if these McNabs are your McNeils, but they're all I've found so far! Do you know any more information about their later lives?
All the best,
Sarah
Later:
There is a Norman MacNabb on the IGI christened 23 Oct 1823 in Snizort, parents Donald MacNabb and Mary
MacKenzie. No sign of a Donald, however. Well, I'll await your answer on these people before trying anything more.