How Green Was My Valley is a 1941 movie that was nominated for 10 Oscars and won 5 of them. One of those victories was for Best Picture where it beat out such movies as Citizen Kane, The Maltese Falcon, Sergeant York, and Suspicion. The film is about the Morgan family who work the coal mines in Wales. The story is occasionally narrated by the youngest son Huw (Roddy McDowall) -- perhaps a decade or two after the events of the movie. The movie starts off with a positive tone. The father and working age brothers are all employed at the mines. Wages are collected by the mother for the betterment of the family as a whole. And the eldest son, Ivor (Patric Knowles) gets married to Bronwyn (Anna Lee). At the same time, there appears to be the start of a romance between the sister, Angharad (Maureen O'Hara), and the new preacher, Mr. Gruffydd (Walter Pidgeon).
That happiness doesn't last long. The mine owner cuts the wages due to what sounds like a recession. The workers go on strike. The father, Gwilym Morgan (Donald Crisp), opposes the strike and is ostracized by the community. The mother, Beth (Sara Allgood), and Huw fall into a frozen stream and suffer significant health consequences due to the exposure to the freezing temperatures. Angharad is courted by the mine owner's son and they marry -- even though she is still in love with the preacher. Ivor dies in a coal mining accident. Two of the other sons eventually get laid off from the mine and move to America. And as the movie ends, the father also dies in the mines.