I thought i'd better send you these transcriptions meanwhile.
You've got the 1861, but it's just for comparison to the 1851.
--
1851 cens 578 (493) Ed 3 p 5 (Ayr)
42 Mill Street, Ayr.
William MAIRS, head, marr, 50, riddle maker, b Galston, AYR
Elizabeth MAIRS, wife, marr, 45, --------------b Kilmarnock, AYR
Mary MAIRS, daur, u/m 27, sewer, b Kilmarnock, AYR
Jean MAIRS, daur, u/m 18, sewer, b Kilmarnock, AYR
Robert MAIRS, son, 15, scholar, b Ayr, AYR
Andrew MAIRS, son, 12, scholar, b Ayr, AYR
Elizabeth MAIRS, daur, 10, scholar, b Ayr, AYR
John McTAGGART, gr-son, 10mos, ---b Ayr, AYR [note gr-son - see 1861]
&
1861 cens 578 Ed 6 p 5 (Ayr)
224 High Street, Ayr.
William MAIR, head, marr, 50, cooper, b Galston, AYR [still as aged 50yrs]
Elizabeth MAIR, wife, marr, 50, -------b Kilmarnock, AYR
Robert MAIR, son, u/m 24, cooper, b St. Quivox, AYR
John MAIR, gr-son, 10, scholar, b St. Quivox, AYR [gr-son John McTaggart 10mos in 1851?]
--
Jack