
This is one of the links we were looking for to connect your Agnes to the family of Donald and Catherine Black. From 1881, there is this entry:
Donald Black 79 Lime Stone Miner b. Lismore
Catherine Black 72 b. Lismore
John Black 26 son Engine Smith b. Lismore
John McKechnie 11 grandson b. Glasgow
Archibald McKechnie 8 grandson b. Glasgow
Address: Auchnacroish Miner Ho, Lismore
Monica
PS: We can ignore the other 1881 entry for a John McKechnie showing in Rothesay I think
