Could the family you are researching be the one on the 1841 census shown living at
Mount Eagle, Fearn?
D. Munro Widow age 50
Margaret Munro age 20
Donald Munro age 15
Bell Munro age 10
William Munro age 8
Since William is 8 years old, this "D" Munro likely died in the period from 1833 to 1841. I assume the "D" is Donald. I also assume the Bell is Isabella.
I am looking at this family as a possible connection with my g-g-grandfather.