He completely abandoned the child of his marriage with Adelaida Ivanovna, not from malice, nor because of his matrimonial grievances, but simply because he forgot him.
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.