About Mary H. O'Connor
Lived 1872 – 1959 (aged 87). Mary H. O'Connor was an American actor, screenwriter, writer and film editor.
Mary H. O'Connor (sometimes credited as Mary Hamilton O'Connor) was an American screenwriter and film editor active during Hollywood's silent era.
Biography She was born in Saint Paul, Minnesota, in 1872, the daughter of Thomas O'Connor and Bridget Nash. She came from a big family (which included a sister, Loyola O'Connor, who became an actress), and grew up in Minnesota, Oregon, and New York.
She began her career as a magazine and newspaper journalist in New York before Hollywood came calling. By 1913, she was living in Santa Monica and churning out scripts at a rapid pace under contract at Vitagraph. At the time, she said she hoped to become a director. Eventually, she was named chief of Triangle-Fine Arts' scenario department. She'd also work at Mutual and Famous Players–Lasky.
In 1921, she left Hollywood to work at Paramount's then-new London studio, where she worked on scripts for films like Dangerous Lies and The Mystery Road. She retired from screenwriting to work on creative fiction after those films.
Selected filmography
The Lure of the Mask (1915) The Lonesome Heart (1915) Up from the Depths (1915) A Yankee from the West (1915) Infatuation (1915) The Penitentes (1915) Cross Currents (1916) Hell-to-Pay Austin (1916) The House Built Upon Sand (1916) Intolerance (1916) Nina, the Flower Girl (1917) A Girl of the Timber Claims (1917) Cheerful Givers (1917) Souls Triumphant (1917) The Sins of Roseanne (1920) The Mystery Road (1921) Dangerous Lies (1921)
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Important facts
People in Mary H. O'Connor's life
Named in this biography and alive at the same time
Contemporaries
People whose lives overlapped Mary H. O'Connor's
Frequently asked questions
Who was Mary H. O'Connor?
American screenwriter (1872-1959)
When was Mary H. O'Connor born?
Mary H. O'Connor was born on 1 September 1872 in Saint Paul.
When did Mary H. O'Connor die?
Mary H. O'Connor died on 3 September 1959 in Los Angeles.
What was Mary H. O'Connor's occupation?
Mary H. O'Connor was an actor, screenwriter, writer and film editor.
What nationality was Mary H. O'Connor?
Mary H. O'Connor was American.
Sources & further reading
Cite this page
APA: Biography.guide. (2026). Mary H. O'Connor. https://biography.guide/mary-h-o-connor/
MLA: "Mary H. O'Connor." Biography.guide, https://biography.guide/mary-h-o-connor/.
Chicago: "Mary H. O'Connor." Biography.guide. https://biography.guide/mary-h-o-connor/.
Data last updated: 2026-09-22 · Spot an error? Report a correction.
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