From Wikipedia
Maurice George Costello (February 22, 1877 – October 29, 1950) was an American prominent vaudeville actor of the late 1890s and early 1900s, who later played a principal role in early American films, as both a leading man, supporting player and a director.
Costello was born in Pittsburgh, Pennsylvania to Irish immigrants Ellen and Thomas Costello. He appeared in his first motion picture in 1905, in which he had the honour of appe...
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The Love of Chrysanthemum
The Story Without a Name
As The Cripple
A Man Betrayed
As Club Inferno Patron (uncredited)
Siren of the Sea
As Fisherman
Johnny Get Your Hair Cut
As Baxter Ryan
Man and Wife
As Caleb Perkins
Alice in Movieland
As Well-Wisher at Train Station (uncredited)
The Inherited Taint
As Herbert Warning
The Sleep Walker
As Dr. Allan Langham
Barriers Burned Away
As John Martin - First Brother
How She Won Him
As Arthur Lewis
For Her Brother's Sake
As Albert Black - The Brother
A Quaker Mother
As John Harmon - A Quaker Husband
A Princess of Bagdad
As Seyn - the Cobbler
She Came, She Saw, She Conquered
As Herbert - Rose's Fiance
For Love and Glory
As Lt. Osmond
Richard III
The Last Alarm
As The Captain of the Fire Brigade - Tom's Father
Conscience
As Harold Winter
A Midsummer Night's Dream
As Lysander
Leah the Forsaken
Fellow Voyagers
As Tom Blake
The Geranium
As Daniel Briton
His Sister's Children
As Harry Burton - the Children's Uncle
Some Steamer Scooping
As Baron Lafitte
Etta of the Footlights
As Lord Wentworth
Too Much Burglar
As Tom Perry
The Evil Men Do
As David Horton
For the Honor of the Family
As Guy Ryder aka Guy Denton
Some Good in All
As Bill - a Providential Thief
The Money Kings
As Roy Brain
The Heart of Jim Brice
As Jim Brice
Wanted... a Grandmother
As Mr. Hale
Her Grandchild
As Donald Grant - the Son
Bobby's Father
As Dick Ramsay - Bobby's Father
The Hindoo Charm
As Sir Edward Tilbury
A Tale of Two Cities
As Sydney Carton
A Vitagraph Romance
As Maurice Costello
Roulette
As Ben Corcoran
The First Violin
The Adventure of the Ambassador's Disappearance
As Lambert Chase
On the Pupil of His Eye
As Lambert Chase, Detective
The Black Sheep
As Harold Moreland - the Black Sheep's Brother
The Sacrifice
As Nick Austin
The Two Battles
As Gordon Frazier
Getting Up a Practice
As Dr. Lyons
The Sale of a Heart
As Charles Lindgard
Iron and Steel
As John Smardon
Lady from Louisiana
As Edwards
Water Lilies
As Maurice
Richelieu; or: The Conspiracy
The Wagon Show
As Colonel Beldan
Little Nemo
As Himself
Citizen Kane
As Extra (uncredited)
A Man to Remember
As Town Councilor (uncredited)
The Roaring Twenties
As Nightclub Patron (uncredited)
The Crimson Stain Mystery
As Harold Stanley
It's a Wonderful World
As Guest (uncredited)
Mr. Smith Goes to Washington
As Diggs (uncredited)
The Picture Idol
As Howard Hanson
Practically Yours
As Senate Stenographer (uncredited)
Comet Over Broadway
As Actor at Dress Rehearsal (uncredited)
Hollywood Boulevard
As Director in Commissary
Dr. LaFleur's Theory
As Dr. LaFleur
The Glass Key
As Card Player (uncredited)
Here Comes Mr. Jordan
As Ringsider at Fight (uncredited)
All This, and Heaven Too
As Extra (uncredited)
The New Stenographer
As The boss
Five Little Peppers And How They Grew
As Hart
The Spider's Web
As Trevor Lawlor - A Young Attorney
Search for Beauty
As Health Acres Guest (uncredited)
Edison, the Man
As Broker
Half a Hero
As Joe Godfrey
The Merchant of Venice
Fog Bound
As Deputy Brown
The Mad Marriage
As Walter Butler
The Way of the Cross
The Days of Terror; or, In the Reign of Terror
Aunty's Romance
As Stephen Fiske Jr.
The Loyalty of Sylvia
As Dr. Dudley Lawrence
Delayed Proposals
As Jack Hardy
As You Like It
As Orlando
The Lonely Princess
As Endicott, an American Millionaire
Julius Caesar, an Historical Tragedy
Eagle of the Night
Foreign Correspondent
As Man (uncredited)
Tin Pan Alley
As (uncredited)
The Sea Hawk
As Man Carrying Spear
Third Finger, Left Hand
As Man at Railroad Station
Johnny Apollo
As Extra (uncredited)
The Meeting of the Ways
As Tom - an Honest Attorney
Lulu's Doctor
As Doctor John Lewis
It All Came Out in the Wash
As Barry Wall
Mrs. 'Enry 'Awkins
As 'Enry Awkins
The Show Girl
As Dr. Renfrew
When Persistency and Obstinacy Meet
As Henry Ford
The Peacemaker
As Himself - Cameo Appearance
The Crown Prince's Double
As Prince Oscar / Barry Lawrence
Camille
As Armand's father
Ride 'Em Cowboy
As Rodeo Spectator with Martin Manning (uncredited)
Andy Hardy Gets Spring Fever
As Man in Audience (uncredited)
The Shamrock and the Rose
As Father O'Brien
Antony and Cleopatra, a Love Story of the Noblest Roman and the Most Beautiful Egyptian
As Marc Antony
Du Barry was a Lady
As Passerby
Happily Buried
As Board Member
The Bride of Lammermoor
As Edgar Ravenswood
Auld Lang Syne
As Tammas
Rose Leaves
The Battle Hymn of the Republic
As Jesus Christ
The Adventure of the Italian Model
As Lambert Chase - the Detective
The Old Silver Watch
As Frank as an Adult
The Glimpses of the Moon
As Fred Gillow
Proving His Love; or, The Ruse of a Beautiful Woman
As Lloyd Stanwood
What a Change of Clothes Did
As John Mason
The Moonstone of Fez
As Schuyler Van Norden
The Mysterious Lodger
As Ralph Brent - the Mysterious Lodger
Salome (The Dance of Seven Veils)
As King Herod
The Dancer and the King, a Romantic Story of Spain
The Climax
As Audience Member (Uncredited)
The Ghost Comes Home
As Townsman at Banquet (uncredited)
His Mother
As Donald Gray
Dead Man’s Honor
As Hugh
Over the Garden Wall
The Changing of Silas Warner
As Silas Warner's Son
A Fig Leaf for Eve
As Nightclub Patron
None So Blind
As Russell Mortimer
Love of Women
As Mr. Redfield