Grandpa
Dr. Meade
Prof. Hilliard
'General' Jeff
King Louis XI
Grandpa Ed Carson
Hitchhiker (uncredited)
Judge
Prof. Lyons
Judge Thaddeus Turner
Dr. Bertram Charles
Old Jolyon Forsyte
Dr. Barnes
Dr. Matthew Sulven
Agha
Jones
Pierre
Pop, Caretaker
Judge Payson
Dr. Ashton
Commodore Thomas Spencer Holliday
Maj. Denning
Judge Rider
Confederate Soldier
Homer Bigelow
Luigi
Senator MacVickers
Elias Samson
Gramps
Phillistus (as H. Davenport)
Mr. 'C'
Fred Taylor
Albert
Charles
Johnson
Dr. Cannon
Carl Carter
Pop Hickey
Benjamin Harris
Minister
Miles Cannon
Old John
Rev. Baker
Doctor
Grandpa Pemberton
Dr. Wilkerson
Bane
Doc Quinn
Grandpa Brokaw
Septimus Kinsolving
Tom McKenna
Dr. Harry
Jed Carson
Archduke Julio
Judge Merrivale
Judge Martin
Michael Worthington
Mr. Powers
Customs Inspector
Roger Metcalf
Uncle Hannibal Smith
Dr. Hite
Dr. Parsons
Joel Bentham
Uncle Dawson
Colonel Skeffington
Justice Peabody
Pop Logan
Pop Tolliver
Ingalls, banker
T.P. Lester
Amos Kidder
Self (archive footage)
Great Grandpa
Courtroom Attendant
John P. Adams, inventor
Peter Laxter
Nathaniel "Nate" Paulson
Henry Sharon
Dr. Healy (uncredited)
Dr. Samuel Basch
Dan Kingdon
Robert Ingersoll Reed
Grandpa Higgins
Slezack
Grandpa Giles
Arthur Davies
Colonel Higgam
Supreme Court Judge
Doc Moore
Pop Craig
Grandpa William Jordan
Judge Boller
'Doc' Herndon
George
Chief of Staff
Dr. Stevens
The Ancient
Dr. Reed
Squire Jim Kirby
Former Bulletin Owner (uncredited)
Clem Adams
Pop Lambert
Guy Lanyard
Judge MacKenzie Meredith
Monsieur de Cosse (uncredited)
Jessup
Mr. Rendleby
'Sandbags' Riley