Duvall died "peacefully" at his home Sunday in Middleburg, Virginia, according to an announcement from his publicist and from a statement posted on his Facebook page by his wife, Luciana Duvall.
"To the world, he was an Academy Award-winning actor, a director, a storyteller. To me, he was simply everything," Luciana Duvall wrote. "His passion for his craft was matched only by his deep love for characters, a great meal, and holding court. For each of his many roles, Bob gave everything to his characters and to the truth of the human spirit they represented."
The bald, wiry Duvall didn't have leading man looks, but few "character actors" enjoyed such a long, rewarding and unpredictable career, in leading and supporting roles, from an itinerant preacher to Josef Stalin. Beginning with his 1962 film debut as Boo Radley, the reclusive neighbor in "To Kill a Mockingbird," Duvall created a gallery of unforgettable portrayals. They earned him seven Academy Award nominations and the best actor prize for "Tender Mercies," which came out in 1983. He also won four Golden Globes, including one for playing the philosophical cattle-drive boss in the 1989 miniseries "Lonesome Dove," a role he often cited as his favorite.
In 2005, Duvall was awarded a National Medal of Arts.