Io, mammeta e tu (1958)

In 1950s Naples (more Italian than Italy itself), a couple struggles to be together against--of course!--the will of the mother-in-law. In the end, not only will they be together, but the mother-in-law-to-be, a widow, finds love as well--although the fellow needs to pass the scrutiny of his own mother-in-law-to-be.