Here's the 1861 family in 1851:
Leurbost, Lochs
Donald Maclean, 42, farmer of 2 acres*
Mary, 42
Catharine, 15
Malcolm, 10
Anne, 6
Mary, 4
Margaret, 6 months
All b. Lochs
* at this time, when there was a process of land reform/clearances, the occupations varied between censuses - crofter, farmer, lotter, tenant. Tenancies were not regularised until the Crofting Act of 1886, which gave security of tenure to the crofters.
What is Donald's occupation on the marriage cert.?
JL