Stolen Kisses(1929)

A crotchety old coot wants his son and daughter-in-law to have kids so he can have grandchildren, but so far they haven't done so. In a somewhat ham-handed attempt to bring them closer together so they'll be in the mood to give them the grandchildren he wants, he winds up bringing them to the point where they're considering divorcing. He decides to change his tactics in order to achieve his goal.