Mr. Deeds Goes to Town (1936) on Netflix

Longfellow Deeds leads a simple and quiet life living in the small town of Mandrake Falls. He's never traveled and makes a living writing little ditties for postcards and the like. When his rich uncle dies, he learns that he has inherited $20 million. He moves to New York where everybody tries get something from him. The estate's lawyer is desperate to get Deeds' power of attorney if for no other reason than to cover up a deficit in the account. They all view Deeds as a country bumpkin but in his own simple way, Deeds just uses common sense and usually ends up making the right decision. He can't resist a damsel in distress however which is what ambitious reporter Babe Bennett is counting on. Love gets in the way however. When Deeds tries to give his money away, he finds himself in court defending his sanity.