Irwin Shaw
Irwin Shaw (February 27, 1913 – May 16, 1984) was an American playwright, screenwriter, novelist, and short-story author whose written works have sold more than 14 million copies. He is best known for two of his novels: The Young Lions (1948), about the fate of three soldiers during World War II, which was made into a film of the same name starring Marlon Brando and Montgomery Clift, and Rich Man, Poor Man (1970), about the fate of two brothers and a sister in the post-World War II decades, which in 1976 was made into a popular miniseries starring Peter Strauss, Nick Nolte, and Susan Blakely.
Source: Wikipedia