Because it is the only entry with those names I believe this is the marriage of Marguerite Brown.
MARGARET BROWN
TERENCE JOHN MCDUFF
1869
652/2 104
Old Monkland (Middle District)
This is very close to Coatbridge where Marguerite Brown is from.
I will continue to cross-reference and double-check. This would only make her 15 according to census age , but that could be out by some years.