Hi Ostler
Hard to answer that
Actual records in the period you are now looking at begin to get thin on the ground.
There may be other ways to get more information. For example, you have two people living with Angus at various points. Firstly in 1851 census entry I posted previously, you have a cousin Charlotte Gunn who could be relevant. Also, from Angus's death cert. in 1888, a cousin Alexander Sutherland from the Post Office at Dunbeath reported his death.
I've found the cousin, the Post Master at Dunbeath on the 1881 Census. From that entry I think I have found cousin Alexander and family in the 1851/61 Censuses:
1851:
Alexander Sutherland 36, merchant grocer, b. Brundall
Mary Sutherland 32, b. Latheron
Alexander Sutherland 3 b. Brundall
Christian Sutherland 2 b. Brundall
William Sutherland 1 b. Brundall
Donald
Gunn* 13, nephew, b. Brundall
Mary Sutherland 20, servant
Address: Balnabruich, Latheron
* Gunn name once more
And in 1861:
Alex Sutherland 45, Postmaster
Meary Sutherland 40
Alex Sutherland 13
Christina Sutherland 12
William Sutherland 10
Robert Sutherland 9
James Sutherland 8
Lucy Sutherland 7
Neil Sutherland 3
Address: Balnabruich Or Dunbeath, Latheron
Just some thoughts which may help
Regards.
Monica