Just some further information:
Births
1867
BOYD, MARY
(CREELY)
629 / 150
Carluke
Died 1867
1869
BOYD, ROSE ANN
(CREELY)
629 / 88
Carluke
1872
BOYD, HUGH
(CRELLEY)
629 / 164
Carluke
1874
BOYD, AGNES
(CREELY)
629 / 69
Carluke
1876
BOYD, MARY
(CRALY)
629 / 24
Carluke
In 1871 Hugh and Agnes have no children with them, he is 28 and she is 37. In 1881 Hugh is now aged 43 and has two children, James aged 8, and Agnes aged 7.
Agnes' age on her death registration in 1879 is 40, not 45.
From this you can see that there are some major problems with knowing exactly how old Hugh and Agnes were.
The birth certificates for the children should have a date and place of marriage for the parents, do you have that? I doubt that they would have been married in 1860.
Baptisms for Mary and Rose name Agnes as Nancy and I assume that James is the child registered as Hugh. I cannot see deaths for the second Mary and Rose Ann.
Debra
Sorry for repeating, I was watching the news at the same time.