He won an Oscar for writing the screenplay of "The Cider House Rules", based on his own novel
He won the Academy Award for 
Best Adapted Screenplay in 1999 for his... [DOC] [TLE] Review for The Cider House Rules (1999) - IMDb [PAR] When Homer grows older, he longs to see the world beyond the orphanage, and 
... adapted his own novel in writing the screenplay for "The Cider House Rules,"... [DOC] [TLE] John Irving - Author, Educator - Biography.com [PAR] Jul 25, 2016 ... For his 1985 novel The Cider House Rules, he also wrote the ... which had a 
profound effect on his life and inspired much of his future writing.