Hello Scully,
There is a death for a Bernard Tierney, 1863, Ayr, Ayr, the only point his age was 76 years, which is a couple of years out. as i have the index for the whole of Ayrshire, census for 1861. there is only one Bernard, of this age in the whole of Ayrshire, and he is in the correct place, ie Ayr, Ayr. I think this is your man.
Janet Tierney McCulloch, seems to pass away 1887, again Ayr, Ayr, her age is 80 Years, which again is a couple of years out.
There is a Janet Tierney, on the 1881. census, living in Wallace Street, Ayr,
Janet Tierney, Head, widow, age 76 years, Born St. Quivox, Ayr.
Agnes Marshall, Lodger, Hawker, Widow, age 62 years, born Wigtown, Scotland.
I am quite sure this is Bernards, wife.
Regards,
Jonn.