James J. Braddock

The 2005 biographical film Cinderella Man tells Braddock's story. Directed by Ron Howard, it stars Russell Crowe as Braddock and Renée Zellweger as his wife, Mae. The film had an estimated budget of $88 million and grossed $108.5 million worldwide. Crowe's performance earned him a Golden Globe nomination for Best Actor. Paul Giamatti, playing Braddock's manager Joe Gould, was nominated for the Academy Award for Best Supporting Actor. The role of neighbor Sara Wilson was played by Rosemarie DeWitt, who is Braddock's real-life granddaughter (daughter of Braddock's daughter Rosemarie Braddock and husband Kenny DeWitt). The film received mostly positive reviews.

Question: is cinderella man based on a true story
Answer: yes