Hello C.T.
I do not know if you have the Richmond family on the 1861. census, This i think is them, although Isabella is indexed as Elizabeth,
Riccarton, Ayr.
Richmond Robert, age 35 years, born Kilmarnock,
Richmond Elizabeth, age 33 years, born Maybole,
Richmond James, age 12 years, born Kilwinning,
Richmond William, age 10 years, born Kilmarnock,
Richmond Robert, age 7 years, born Kilmarnock,
Richmond Grace, age 3 years, born Riccarton,
Richmond Hannah, age 3 years, born Riccarton.
This is from my disc, and is only a index but the 1861, index gives place of birth.
The IGI. has three births to this couple, Robert Richmond, and Isabella Boag.
Hannah Richmond, born 13/Jan/1861. Riccarton, Ayr,
John Richmond, 19/March/1857. Kilmarnock, Ayr. ( not on census may have died young)
Grace Richmond, born 16/Aug/1858. Riccarton, Ayr.
Then there are four more submitted births, these have been put on by someone researching this family.
Richmond James, born about 1846, Scotland,
Richmond William, born about 1848, Scotland,
Richmond Robert, born about 1850 Scotland,
Richmond Grace, born about 1852, Scotland.
They have got the names correct but the birth years are well out.
Now i noticed on my index that Hannah Richmond, was down as three years, of age, so i checked on Scotlandspeople, and her age is actually down as between 0. and 1. years old, so that actually fits in with her birth.
So i reckon this is your family just before they moved to Australia.
And the Boag's, must have moved also because they are nowhere to be seen in the whole of Ayrshire, on the 1861 census.
Regards,
Jonn.