Have you got the family of Donald and May McIntosh on the censuses, to help place them regarding locations etc?
Monica

Added: Found Donald and May in 1861:
Donald McIntosh 43, Cross Cutter Sawyer b. Moy Inv.
May McIntosh 45, b. Glasgow
Margaret McIntosh 9 b. Cromarty, Ross
Elizabeth McIntosh 7 b. Cromarty, Ross
Mary McIntosh 2 b. Cromarty, Ross
Duncan Grant 10, nephew b. Dores
Mary Grant 34, sister in law b. Dores
Donald McBean 43, brother in law b. Glasgow
And this is the one you referred to as the first sighting of Mina in 1881:
Thomas Richmond 35, Medical Profession General Practitioner b. ?
Anna E Richmond 24 b. Inverness
Thomas H Richmond 2 b. Jamaica (British Subject), Kingston
Mina McIntosh 21, domestic servant b. Glasgow
Address: 2 Windsor Terrace, Kelvin Glasgow