Hi Betty,
1891 Census - Living in the Village of Urquhart
John Williamson Head, b.1829, Elgin, Saw Miller
Margaret Williamson, Wife, b.1831, Cumberland
George Hutchinson, Serv, b. 1855, Northumberland, Traction Engine Driver
Annie Melvin, Visitor, b.1868, Urquhart
William Duncan, Grandson, b.1884, UrquhartMargaret Dochar, Visitor, b.1886, Easnorth
John Melvin, Grandson, b.1890, Aberdeen.
There is a difference in John Williamson's birthdate from the 1901 census to the above, therefore I presume there is an error in the transcription. Also John is married to a Margaret, did he remarry? Having said all that I'm hoping they are the correct family.

Regards
JJ