He now realized that matrimony — at any rate with Praskovya Fedorovna — was not always conducive to the pleasures and amenities of life, but on the contrary often infringed both comfort and propriety, and that he must therefore entrench himself against such infringement.
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.