Just came across this thread.
The marriage was recorded in the parish of Gairloch. Since it just says 'in Ineleoid', not 'Ineleoid in the parish of xyz' you are looking for somewhere in the parish of Gairloch.
So it cannot be Castle Leod or anything near there.
I have looked through the whole of the transcription of the census of Gairloch in 1841 at
https://www.freecen.org.uk/cgi/search.pl and found nothing remotely resembling Ineleoid. So wherever it was, it must either have been abandoned very early, or it must have changed its name.
Spelling isn't important. You can be Mac, Mc, M', sometimes followed by a space and sometimes not, and the same individual's name can be spelled in different ways depending on who is writing it down. The same applies to place names. It would make life a lot easier if there were a single 'correct' way of spelling names, but there isn't.

The names Jessie and Jan(n)et are interchangeable. If you mislay a Janet, look for her as Jessie, and vice versa.