Hi Nessy
I had a look on IGI and found the family . It looked as though they were the only McCall family in the village at that time.
Parents
Samuel McCall
& Margaret Seaton
JANET MCCALL -
Christening: 30 JUL 1837 Stair, Ayr, Scotland
JEAN GIBB MCCALL -
Christening: 13 OCT 1831 Stair, Ayr, Scotland
MARGARET MCCALL
Christening: 17 DEC 1829 Stair, Ayr, Scotland
MARGARET MCCALL
Christening: 28 OCT 1833 Stair, Ayr, Scotland
AGNES CLARK MCCALL
Christening: 18 OCT 1835 Stair, Ayr, Scotland
I don't think they were living in the village of Stair either. There were suggestions from a submission that they were actually in the village of Trabboch which is in Stair parish.
Website for Stair Village church -
http://www.stairchurch.homestead.com/HOME.htmlTrabboch doesn't exist now with the mines having closed and almost all local work opportunities gone. It was no more than a row of miners cottages and a wee school.
I looked for Memorial Inscriptions in the Stair Church site and there was only one which did not match your family.
Look at some of the other Ayrshire sites as there are quite a few pictures of the area.
Russell