Mary Grainger was the wife of Lawrence Grainger and the mother of Edward Grainger. She was good friends with Lady Louisa Pollard, and attended meetings led by Emmeline Pankhurst, as a supporter of women's suffrage. (PROSE: Forgotten)

During childbirth on 24 June 1906, Mary was attacked by the Master. Mary was saved by her maid Violet, who hit the Master with a rolling pin. (PROSE: Prologue)

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