I know of two men who converted to Catholicism because of their wives.
One from Mormonism and one from an evangelical background.
Anecdotal evidence, the statistics point in the opposite direction. I don’t doubt it happens, but it’s rare. Wives convert at double or better the rate that husbands do.
The more wishy-washy the persons faith the more likely they are to marry outside of it. That is a faith-based marriage isn’t that important to them.