Sonny Bupp

Moyer MacClaren Bupp (January 10, 1928 – November 1, 2007) professionally known as Sonny Bupp, was an American child film actor and businessman. His most notable film was Citizen Kane (1941), in which he appears as Junior, Charles Foster Kane III, the eight-year-old son of Charles Foster Kane and his first wife, Emily. Bupp was the last surviving credited member of the Citizen Kane cast at his death.
Cast

Citizen Kane
Charles Foster Kane III

Michael O'Halloran
Sarge (uncredited)

Cash and Carry
Jimmie (uncredited)

Hunted Men
Smallest G-Men Club Member, Boy

What Becomes of the Children?
Little Freddy Worthington

No Place to Go
Thomas "Tommy" M. Foster

Boy Trouble
Chester Platt

Eyes of the Underworld
Student Fighting with Mickey

All That Money Can Buy
Martin Van Buren Aldrich (uncredited)

My Dear Miss Aldrich
Boy Asking for Rabbit (uncredited)

We Who Are About to Die
Hit-and-Run Victim (uncredited)

Love Is on the Air
Billie - Boy on Radio Program

On Borrowed Time
Boy in Tree (uncredited)

You Can't Buy Luck
Orphan Boy (uncredited)

Fixer Dugan
Boy Chiseler

Missing Witnesses
Little Boy (uncredited)

Parole Fixer
Bobby Mattison

The Great O'Malley
Boy with Lollipop (uncredited)

Renegade Trail
Joey Joyce

Abe Lincoln in Illinois
Willie Lincoln (uncredited)

Emergency Squad
Peter

Sergeant York
Boy in Sunday School (uncredited)

Man Hunt
Young Boy (uncredited)

Half a Sinner
Willy

Three Faces West
Billy Welles

And Sudden Death
School boy

Little Orvie
Freddie Jackson (uncredited)

Bad Men of Missouri
Young Grat
Men in Fright
Sonny the Kid in Hospital (uncredited)

The Day of Rest
Younger Son

Sudden Money
Billy

Penrod's Double Trouble
Monk (uncredited)

Queen of the Mob
Newsboy

One Foot in Heaven
Boy (uncredited)

When Tomorrow Comes
Boy Hiding from Policeman (uncredited)