How Green Was My Valley is a 1941 American drama film set in Wales, directed by John Ford.
The film, based on the best-selling 1939 novel of the same name by Richard Llewellyn, was produced by Darryl F.
Zanuck and scripted by Philip Dunne.
It stars Walter Pidgeon, Maureen O'Hara, Anna Lee, Donald Crisp, and a young Roddy McDowall.