Following are entries for Thomas McConnochie and family - 1891 and 1901 censuses:
1891 - Girvan Thomas Royal Bank House Head M 45 Bank Agent Employed b. Colmonell, Ayrshire Agnes Wife M 38 b. England William Son 2 b. Girvan Ayrshire (there are also 2 servants recorded)
1901 - Girvan Thomas Royal Bank HOuse Head Widower 55 Bank Agent b. Colmonell William Son 12 Agnes Dau 2 (I think) (there are also 3 servants recorded)
This family is Not on the 1881 census for the whole of Scotland.