This is a long shot but I might have a connection to this.
From my side, I am connected to the MacNeils, two different ways, family tradition has it they were from Balvicar, however they may also be from Ardchonnel.
The connection is that a ?? Livingston signed the marriage certificate for Jane MacNeill and Duncan Campbell 1899 at Greenock. I can not make our the forename.
Please do a search for Mary Darroch, Killean, Glassary for more info