The legendary US actor was nominated for seven Oscars and won for his role as a washed-up country singer in Tender Mercies.

Oscar-winning actor Robert Duvall, best known for his work in The Godfather and Apocalypse Now, has died aged 95, his wife has announced in a Facebook post.

“For each of his many roles, Bob gave everything to his characters and to the truth of the human spirit they represented,” Luciana Duvall said in a statement on Monday.

Duvall was best known for playing forceful roles such as his depiction of Tom Hagen, consigliere to the Corleone Mafia family in The Godfather.

He also played Lieutenant Colonel Bull Meechum in The Great Santini and the title character in Stalin, as well as broken-down and fallen characters in Tender Mercies and The Apostle.

Duvall, the son of a US Navy admiral and an amateur actress, grew up in Annapolis, Maryland in the United States. After graduating from Principia College in Illinois and serving in the US Army, he moved to New York City, where he roomed with Dustin Hoffman and befriended Gene Hackman when the three were struggling acting students.

After working on a variety of television shows, Duvall made a strong impression in his first forays onto the big screen, such as his first movie part as the mysterious recluse Boo Radley in To Kill a Mockingbird.

Duvall got the part at the suggestion of the film’s screenwriter, Horton Foote, who had liked Duvall’s work in one of his plays. Foote later wrote Tender Mercies, a 1983 film for which Duvall won the Academy Award for best actor as a washed-up country singer.

Duvall was nominated for another six Oscars, including for his work in Frances Ford Coppola’s 1979 Vietnam epic Apocalypse Now. Duvall played the off-kilter, surfing-obsessed Lieutenant Colonel Bill Kilgore.

The character’s famous line, “I love the smell of napalm in the morning”, became legendary.

In all, Duvall appeared in almost 100 movies. And when he grew weary of Hollywood, he made his own films. He wrote, directed and won an Oscar acting nomination for The Apostle, the story of a conflicted preacher.

Duvall did the same with Assassination Tango, a movie that allowed him to exhibit his passion for the tango and Argentina, where he met his fourth wife, Luciana Pedraza.

In later life, Duvall split his time between Los Angeles, Argentina and a farm in Virginia, where he converted the barn into a tango dance hall.