Hello Jayne
I have a great deal of information on Murray Families in Sutherland and have looked at this Margaret Murray married to Donald Munro. I do not know who her parents are but do know that the children of Donald and Margaret were born at Acharrie, Creich. There were many Murrays in Acharrie so should be able to tie Margaret up with parents.
The children born at Acharrie were John, born 3 January 1822; Janet, born 25 October 1823; Hugh, born 6 November 1825 and Donald, born 22 March 1828. You say there was also a Daniel but Daniel and Donald are the same name in Sutherland so perhaps there was only one child.
I am puzzled by the names of Donald Munro's parents - why are there no children named for them?
It is most unusual if not unique for families in the Highlands not to name their children after the parents. I would have expected Donald's father to be either a John or a Hugh. Would you like to contact me by email and we can look at this further?
Christine