This looks like the family in the 1841 Census:
Alexander, 30
Elizabeth, 20
David, 1 month
All the family are showing as born in Caithness. Alexander is down as a farmer. The address is Greenhill, Latheron.
Remember ages in the 1841 Census are supposed to be rounded down to the nearest 5 for everyone over 15, children under 15 are supposed to be shown at their true age.
Regards.
Monica