Marian Almond was a pretty little person of seventeen, with a very small figure and a very big sash, to the elegance of whose manners matrimony had nothing to add.
There are no more uses of "matrimony" in the book.
Show samples from other sources
Carlotta stepped back, to better deliver the truth that, when she contemplated holy matrimony, made her heart beat faster.
Piper Kerman -- Orange Is the New Black
I haven’t been to visit him at his condo in several days, but I hear from him that he and Liv have been shopping for their matrimonial bed, each of theirs a bit too historied for the spending of restful nights.