The marriage for Bertha's parents I think was showing for 1904 in Dunfries.
I wonder about this entry as a possibility for John Comrie, Bertha's father. Note the name of a sibling, Angus McGregor Comrie.
Peter Comrie 48 plumber b. Crieff, Perthshire
Isabella Comrie 49 b. Irvine, Ayrshire
John White Comrie 17, woolen mill worker b. Crieff, Perthshire
Angus McGregor Comrie 15, woolen mill worker b. Crieff, Perthshire
James Milligan Comrie 11 b. Crieff, Perthshire
Maggie Robertson Comrie 6 b. Langholm
David Clark Comrie 7 b. Langholm
Address: 34 Factory Entry, Langholm, Dumfriesshire
A stage at a time though....
Monica