Marten Cumberland

Sydney Walter Martin "Marten" Cumberland (23 July 1892 – 1972) was a British journalist, novelist and editor. He also wrote under the pseudonym, Kevin O'Hara. He specialised in the detective/mystery genre and created the character of Inspector Saturnin Dax, a French policeman.

During World War I, he served as a radio operator in the Merchant Marine. After the war, he worked successively for several newspapers and publishing houses as a writer. He also composed some detective stories for various magazines. He became a freelance journalist in 1924. In 1923, he published his first novel, Loaded Dice, which he cowrote with B.V. Shann. He married Kathleen Walsh in 1928. In his last years, he moved to Dublin, where he died in 1972.