American actor. Died of the Spanish flu in 1918. Not to be confused with his son, also named Harold Lockwood.
The Haunted Pajamas
Richard Hudson
Wildflower
Arnold Boyd
The Smuggler's Sister
Bessie's Brother
The Man from Mexico
Danton
The Ball Player and the Bandit
Harry Burns
The Scales of Justice
Frank Dexter
The Avenging Trail
Gaston Olaf
Shadows of Suspicion
Cyril Hammersley
Pidgin Island
John Cranford
The Revelation
Mr. Burns
Hearts Adrift
Jack Graham
The Law of the Range
Jack Corning - the Sheriff's Son
The Unwelcome Mrs. Hatch
Jack Adrian
Such a Little Queen
Robert Trainor
A Brave Little Woman
The Burglar
Tess of the Storm Country
Frederick Graves
David Harum
John Lenox
Under Handicap
Greek Conniston
The River of Romance
William Kissaam Kellogg aka "One-Cylinder Sam"
The Promise
Bill Carmody
Are You a Mason?
Bob Trevors
The Conspiracy
Jack Howell
Broadway Bill
'Broadway Bill' Clayton
The Great Romance
Rupert Danza
The Crucible
Craig Atwood
The Love Route
John Ashby
The Hidden Children
Evan Loskiel
Big Tremaine
John Tremaine, Jr.
The Landloper
Walker Farr
A Man of Honor
David Smith
Pals First
Danny Rowland
The Hidden Spring
Donald Keith
The Come-Back
Burt Ridgeway
Mister 44
John Stoddard
The Masked Rider
Bruce Edmunds