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 appearing in the first serious film to feature the character of Sherlock Holmes in the movie Adventures of Sherlock Holmes, in which Costello played the title role. He continued to work for Vitagraph, being a member of the first motion picture stock company ever formed, playing opposite Florence Turner. Among some of his best known pictures are A Tale of Two Cities, The Man Who Couldn't Beat God and For the Honor of the Family. After an absence of some years he returned to the screen. He was married to actress Mae Costello (née Altschuk). His descendants include two daughters, actresses Dolores Costello and Helene Costello, a grandson John Drew Barrymore, and a great granddaughter Drew Barrymore. He was one of the world's first leading men in early American cinema, but like a lot of other silent screen stars, he found the transition to "talkies" extremely difficult, and his leading man status was over. However, Costello was a trouper, and continued to appear in movies, often in small roles and bit parts, right up until his death in 1950.
Movies
The Love of Chrysanthemum
The Story Without a Name
The Cripple
A Man Betrayed
Club Inferno Patron (uncredited)
Siren of the Sea
Fisherman
Johnny Get Your Hair Cut
Baxter Ryan
Man and Wife
Caleb Perkins
Alice in Movieland
Well-Wisher at Train Station (uncredited)
The Inherited Taint
Herbert Warning
The Sleep Walker
Dr. Allan Langham
Barriers Burned Away
John Martin - First Brother
How She Won Him
Arthur Lewis
For Her Brother's Sake
Albert Black - The Brother
A Quaker Mother
John Harmon - A Quaker Husband
A Princess of Bagdad
Seyn - the Cobbler
She Came, She Saw, She Conquered
Herbert - Rose's Fiance
For Love and Glory
Lt. Osmond
Richard III
The Last Alarm
The Captain of the Fire Brigade - Tom's Father
Conscience
Harold Winter
A Midsummer Night's Dream
Lysander
Leah the Forsaken
Fellow Voyagers
Tom Blake
The Geranium
Daniel Briton
His Sister's Children
Harry Burton - the Children's Uncle
Some Steamer Scooping
Baron Lafitte
Etta of the Footlights
Lord Wentworth
Too Much Burglar
Tom Perry
The Evil Men Do
David Horton
For the Honor of the Family
Guy Ryder aka Guy Denton
Some Good in All
Bill - a Providential Thief
The Money Kings
Roy Brain
The Heart of Jim Brice
Jim Brice
Wanted... a Grandmother
Mr. Hale
Her Grandchild
Donald Grant - the Son
Bobby's Father
Dick Ramsay - Bobby's Father
The Hindoo Charm
Sir Edward Tilbury
A Tale of Two Cities
Sydney Carton
A Vitagraph Romance
Maurice Costello
Roulette
Ben Corcoran
The First Violin
The Adventure of the Ambassador's Disappearance
Lambert Chase
On the Pupil of His Eye
Lambert Chase, Detective
The Black Sheep
Harold Moreland - the Black Sheep's Brother
The Sacrifice
Nick Austin
The Two Battles
Gordon Frazier
Getting Up a Practice
Dr. Lyons
The Sale of a Heart
Charles Lindgard
Iron and Steel
John Smardon
Lady from Louisiana
Edwards
Water Lilies
Maurice
Richelieu; or: The Conspiracy
The Wagon Show
Colonel Beldan
Little Nemo
Himself
Citizen Kane
Extra (uncredited)
A Man to Remember
Town Councilor (uncredited)
The Roaring Twenties
Nightclub Patron (uncredited)
The Crimson Stain Mystery
Harold Stanley
It's a Wonderful World
Guest (uncredited)
Mr. Smith Goes to Washington
Diggs (uncredited)
The Picture Idol
Howard Hanson
Practically Yours
Senate Stenographer (uncredited)
Comet Over Broadway
Actor at Dress Rehearsal (uncredited)
Hollywood Boulevard
Director in Commissary
Dr. LaFleur's Theory
Dr. LaFleur
The Glass Key
Card Player (uncredited)
Here Comes Mr. Jordan
Ringsider at Fight (uncredited)
All This, and Heaven Too
Extra (uncredited)
The New Stenographer
The boss
Five Little Peppers And How They Grew
Hart
The Spider's Web
Trevor Lawlor - A Young Attorney
Search for Beauty
Health Acres Guest (uncredited)
Edison, the Man
Broker
Half a Hero
Joe Godfrey
The Merchant of Venice
Fog Bound
Deputy Brown
The Mad Marriage
Walter Butler
The Way of the Cross
The Days of Terror; or, In the Reign of Terror
Aunty's Romance
Stephen Fiske Jr.
The Loyalty of Sylvia
Dr. Dudley Lawrence
Delayed Proposals
Jack Hardy
As You Like It
Orlando
The Lonely Princess
Endicott, an American Millionaire
Julius Caesar, an Historical Tragedy
Eagle of the Night
Foreign Correspondent
Man (uncredited)
Tin Pan Alley
(uncredited)
The Sea Hawk
Man Carrying Spear
Third Finger, Left Hand
Man at Railroad Station
Johnny Apollo
Extra (uncredited)
The Meeting of the Ways
Tom - an Honest Attorney
Lulu's Doctor
Doctor John Lewis
It All Came Out in the Wash
Barry Wall
Mrs. 'Enry 'Awkins
'Enry Awkins
The Show Girl
Dr. Renfrew
When Persistency and Obstinacy Meet
Henry Ford
The Peacemaker
Himself - Cameo Appearance
The Crown Prince's Double
Prince Oscar / Barry Lawrence
Camille
Armand's father
Ride 'Em Cowboy
Rodeo Spectator with Martin Manning (uncredited)
Andy Hardy Gets Spring Fever
Man in Audience (uncredited)
The Shamrock and the Rose
Father O'Brien
Antony and Cleopatra, a Love Story of the Noblest Roman and the Most Beautiful Egyptian
Marc Antony
Du Barry was a Lady
Passerby
Happily Buried
Board Member
The Bride of Lammermoor
Edgar Ravenswood
Auld Lang Syne
Tammas
Rose Leaves
The Battle Hymn of the Republic
Jesus Christ
The Adventure of the Italian Model
Lambert Chase - the Detective
The Old Silver Watch
Frank as an Adult
The Glimpses of the Moon
Fred Gillow
Proving His Love; or, The Ruse of a Beautiful Woman
Lloyd Stanwood
What a Change of Clothes Did
John Mason
The Moonstone of Fez
Schuyler Van Norden
The Mysterious Lodger
Ralph Brent - the Mysterious Lodger
Salome (The Dance of Seven Veils)
King Herod
The Dancer and the King, a Romantic Story of Spain
The Climax
Audience Member (Uncredited)
The Ghost Comes Home
Townsman at Banquet (uncredited)
His Mother
Donald Gray
Dead Man’s Honor
Hugh
Over the Garden Wall
The Changing of Silas Warner
Silas Warner's Son
A Fig Leaf for Eve
Nightclub Patron
None So Blind
Russell Mortimer
Love of Women
Mr. Redfield