Flynn’s Film? Errol’s Oscar?

Was Norman Maine based in part on Errol Flynn?
(and/or perhaps John Barrymore and/or Norman Kerry?)
books.google.com…

Was Errol offered the role, but rejected it?
www.imdb.com…

Would Errol have been a better Norman Maine?
greenbriarpictureshows.blogspot.com…

Or, did Jack Warner “blackball” him from getting it?
www.tcm.com…
www.geraldclarke.com…

Was this Errol’s best chance to win an Academy Award for Best Actor?