About Henry St. John Cooper
Henry St. John Cooper was a British novelist.
Charles Henry St. John Cooper (1869 – 1926) was a prolific English novelist of school and adventure fiction. He wrote thousands of stories for several Amalgamated Press papers, sometimes under the pen name Mabel St. John. According to his son, he also wrote many "authorless" Sexton Blake stories for the Union Jack. His novel Sunny Ducrow was adapted into a 1926 film, Sunny Side Up.
Actress Gladys Cooper was his half-sister, and musician Henry Russell was his maternal grandfather.
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Important facts
Frequently asked questions
Who was Henry St. John Cooper?
English novelist
What was Henry St. John Cooper's occupation?
Henry St. John Cooper was a novelist.
What nationality was Henry St. John Cooper?
Henry St. John Cooper was British.
Sources & further reading
· Wikipedia: Henry St. John Cooper
· DBpedia: Henry St. John Cooper
Cite this page
APA: Biography.guide. (2026). Henry St. John Cooper. https://biography.guide/henry-st-john-cooper/
MLA: "Henry St. John Cooper." Biography.guide, https://biography.guide/henry-st-john-cooper/.
Chicago: "Henry St. John Cooper." Biography.guide. https://biography.guide/henry-st-john-cooper/.
Data last updated: 2026-09-20 · Spot an error? Report a correction.
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