From Wikipedia
Rosemary Theby (April 8, 1892 – November 10, 1973) was an American film actress. She appeared in some 250 films between 1911 and 1940.
Born Rosemary Theresa Theby in St. Louis, Missouri, Theby studied at Sargent's School in New York. A contemporary newspaper account described her as being of "medium-height, well proportioned, with regular features and dark hair".
Her first film experience came in the Vitagraph production of The ...
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As Man Desires
As Evelyn Beaudine
The Hushed Hour
As Daisy Appleton
The Midnight Patrol
As Patsy O'Connell
Rio Grande
As Maria Inez
The Last Trail
As Chiquita
Yellow Men and Gold
As Carmen
I Am the Law
As Mrs. Georges Mordeaux
Mary of the Movies
As Rosemary Theby (uncredited)
Shame
As The Weaver of Dreams
In Search of a Thrill
As Jeanne
The Fatal Glass of Beer
As Ma Snavely
A Red Cross Martyr; or, on the Firing Lines of Tripoli
The Illumination
As Ruth, Giuseppe's Fiancé
The Chinatown Mystery
The Drunkard
As Mrs. Jackson
When a Woman Strikes
The Geranium
As Ethel Tunison
A Juvenile Love Affair
As Jane's Mother
The Toymaker
As Nell Avery
A Splendid Hazard
As Hedda Gobert
A Fortune in a Teacup
As Sybil
Father's Hot Toddy
As Second Daughter
The Godmother
As Third Girl
The Awakening of Bianca
The Reincarnation of Karma
As Quinetrea
The Adventure of the Ambassador's Disappearance
As The Nurse
Betty's Baby
As Betty
The Little Minister
An Eventful Elopement
As Mabel Wright - Daughter of Pronubial Couple
The Sacrifice
The Two Battles
As Gladys Mayford
Irene's Infatuation
As Helen - Irene's Friend
The Light of St. Bernard
As Marie
Wanted, a Sister
His Father's Son
As Dick's Sweetheart
Love in the Ghetto
As Rebecca Barish - the Daughter
Rock of Ages
Written in the Sand
As Norma Gyntsen
Cupid Through a Keyhole
As Lila Lane - Harry's Sweetheart
The Web
As Beatrice Esmond
Undercover Doctor
As Guest (uncredited)
The Devil Is Driving
As Matron (uncredited)
His Brother's Wife
As Minor Role (uncredited)
Man on the Flying Trapeze
As Helpful Passerby (uncredited)
San Francisco
As Earthquake Survivor (uncredited)
Our Relations
As Pirate's Club Customer (uncredited)
Neighborhood House
As (uncredited)
Doctor's Orders
One Rainy Afternoon
As Bit Role (uncredited)
Wings in the Dark
As Rockwell's Secretary (uncredited)
Who's Who in the Zoo
As Mother
Taxi Troubles
As Mrs. Andy Martin
He Trumped Her Ace
As Mrs. Daly
Sugar Plum Papa
As Princess Olga
Midnight Daddies
As Mrs. Wilbur Louder
Scotch
As Aunt Rose
Montmartre Rose
The Dream Melody
As Alicia Harrison
Girls Who Dare
As 'Alabam' Kenyon
The Silent Mystery
As Priestess Kah
Unexpected Places
As Cherie
Lost and Found on a South Sea Island
As Madge
The Red Lily
As Nana
Boston Blackie's Little Pal
As Mrs. Wilmerding
Cocaine Traffic; Or, The Drug Terror
As May
The Port of Missing Girls
As School Matron
A Connecticut Yankee in King Arthur's Court
As Queen Morgan le Fay
Unseen Forces
As Winifred
Vogues of 1938
As Wife
The Mystery Of 13
As Marian Green
One Year to Live
As Lolette
Terror Island
As Stella Mourdant
You Can't Take It with You
As Woman (uncredited)
The Chalk Line
As Mrs. Love
The Second Hundred Years
As Dinner Guest (uncredited)
Yours for the Asking
As Woman
The Great Love
As Miss Corintee
Married to Order
As Rose
The Bachelor's Baby, or How It All Happened
As Ethel Wynne
So Big
As Paula Storm
Kismet
As Kut-al-Kulub
Mr. Bolter's Infatuation
The Classmate's Frolic
As Classmate
As You Like It
As Celia
The Master Painter
As Eleanor - Marshall's Niece
Ten Nights in a Bar-room
As Sarah Morgan
Make Way for Tomorrow
As Minor Role (uncredited)
Secrets of the Night
As Margaret Knowles
One Million B.C.
As Shell Person
The Hand Bag
As Tom's Sweetheart
The Mills of the Gods
As Giulia
Fightin' Mad
As Nita de Garma
The Eternal Flame
As Madame de Serizy
A Model Husband
As Mrs Cherub
Upstairs and Down
As Betty Chesterton
Bright and Early
As His Daughter
Trial Marriage
As Mrs. Geoorge Bannister, 4th
Bulls and Bears
As Eleanor Crenshaw
Long Live the King
As Countess Olga
The Winged Mystery
As Shirley Wayne
Fifth Avenue Models
As Mrs. Van Groot
The Girl of the Golden West
As Nina Micheltorena
A Son of the Sahara
As Rayma
Tea- With a Kick!
As Aunt Pearl
The Peacock Fan
As Mrs. Rossmore
His Strenuous Visit
Riding to Fame
As Marge
The Butterfly Man
As Mrs. Fielding
The Man of Shame
Across the Divide
As Rosa [O'Flynn]