Found your family in the 1861:
Pen Close, Boness, West Lothian - ED 6 Page 4
Henderson
James, 31, miner, b. Biggar, Lanarkshire
Catherine, 25, b. Alloa, Clackmannanshire
John Snaddon, 21, miner, b. Alloa, Clackmannanshire
I don't think the 1881 family that you've found are yours.
Gadget