женился на ней

married her

→ жениться
phrase Rare #39,169
married her Used by a male speaker or when referring to a male subject. The verb жениться takes на with the instrumental case; на ней means “her” in this construction.
RU: Он женился на ней прошлым летом.
EN: He married her last summer.

Утром он встретил женщину, прочитал ей стихи, а вечером женился на ней.

In the morning, he met a woman and read her some poetry; that evening, he married her.

— ПиКей (2014)