Donald Gallaher
Donald Gallaher (June 25, 1895 – August 14, 1961) was an American actor who appeared in 25 films between 1903 and 1949. He also directed five films, including Temple Tower (1930). His name is sometimes misspelled "Gallagher". Gallaher was born in Quincy, Illinois. After moving to New York City as a child with his mother, he began acting in productions such as A Royal Family. He had 10 roles in plays before he reached age 12. Description above from the Wikipedia article Donald Gallaher licensed under CC-BY-SA, full list of contributors on Wikipedia.
Filmography

Road to Utopia
as Man at Zambini's (uncredited)
Road to Utopia
as Man at Zambini's (uncredited)

The Man in Half Moon Street
as Ticket Agent
The Man in Half Moon Street
as Ticket Agent

Keeper of the Flame
Keeper of the Flame

Straight Shooter
as Saloon Gunman (archive footage)
Straight Shooter
as Saloon Gunman (archive footage)

The Magnificent Fraud
as Dr. Diaz
The Magnificent Fraud
as Dr. Diaz

Outlaws' Paradise
as Henchman Mort
Outlaws' Paradise
as Henchman Mort

Never Say Die
as Manager
Never Say Die
as Manager

Code of the Fearless
as Ranger Pete Howard
Code of the Fearless
as Ranger Pete Howard

Six-Gun Trail
as Henchman Tracy
Six-Gun Trail
as Henchman Tracy

Collegiate
as Thomas J. Bloodgood
Collegiate
as Thomas J. Bloodgood

Thru Different Eyes
as Spencer
Thru Different Eyes
as Spencer
Friendship
as The Young Actor
Friendship
as The Young Actor

Eye for Eye
as Ensign Arnauld
Eye for Eye
as Ensign Arnauld

Draft 258
Draft 258

The Silent Master
as Eugene Arlen
The Silent Master
as Eugene Arlen

Zudora
Zudora

The Million Dollar Mystery
The Million Dollar Mystery

The Great Train Robbery
as Little Boy (uncredited)
The Great Train Robbery
as Little Boy (uncredited)