In 1861 Elizabeth is at Shawfield House Lodge with her children James, Robert, John, Elizabeth and Margaret. In 1871 she is at Finnart Coachman House along with her children James, Robert and Elizabeth. In Finnart Bothey is Henry McGie and two others ie not in the same dwelling so not sure why Ancestry has them listed at the same dwelling. I have downloaded the original documents
The marriage of Clark and Elizabeth reads
July 20 1828
Clark Machan & Elizabeth Altera both residing in College St in this parish , signified their purpose of marriage by Mar John Blair, Elder, and being thrice proclaimed they were married on the 9th Day of Aug 1828 Years, by Rev Jas Foote Mins