Watch La légende de Thierry Mauvignier for Free: How to Stream the Movie Online at 123Movies. . In August 2021, the director Thierry Mauvignier revisited a Poitevine legend of "the grave of the child" with his brother, the writer Laurent Mauvignier. This immersive and humanist documentary retraces the long road that Thierry and his actors and his technical team had to travel to reach the end of his production.