Carrefour

although this film was made before "the return of martin guerre", the latter is the closer adaptation to the incident that took place in 16th century France. Don't make the mistake of thinking that this is the truer of the two stories, because that is not the case. The story was turned into a very good short story by Janet Lewis, titled "the wife of Martin Guerre", which looks at the incident through the eyes of, you guessed it, Mrs Martin Guerre (Bertrande de Rols). There has been a more modern remake, which stars Richard Gere. Sommerby or something of the sort i think.