OK Mary. I've not found any info. for certain, but below is a website for Vital Stats in Nova Scotia.
https://www.novascotiagenealogy.com/
You will have to download a free program, available on that site to let you move the record page around to see it.
If you put in Joseph Comeau, Digby you will see two marriages
for him and Madeline Comeau, one in 1874, the other in 1876.
Both are different lads, the one Joseph and family is in the 1881 Census, the second I cannot find.
Hopefully some others will help with your search.