Question: The Munro Ambulance Corps was started in August 1914 by Hector Munro, who was one of the directors of the Medico-Psychological Clinic in London, some of its noteworthy members were which popular British writer, who wrote about two dozen novels, short stories and poetry, and used the pseudonym of Mary Amelia St. Clair?
Sentence (from "May Sinclair"): She was an active suffragist, and member of the Woman Writers' Suffrage League.
Relevant evidence: No