Czerwone i zlote (1969)

An old man escapes from a retirement home to impersonate a man who has died in his arms and told him he never went home to his new bride after the first World War. The old woman is suspicious at first but then lets him stay. The townspeople begin to talk but he wins them over even if they feel he does not look like the man in question. With time and his gentle ways change people's disposition toward him until he decides to leave. But his supposed wife firmly brings him back and they decide to get married.