Mary Harriett Isabella Dickson (1856-1929) (1856–1929) Parents John Bourmaster Dickson Sarah Matilda Poynder Children Evelyn Eleanora Beauclerk Siblings Isabella Emily Dickson John Dickson-Poynder, 1st Baron Islington Caroline Matilda Dickson Partners Robert FitzRoy Maclean Johnstone Frederick Amelius Beauclerk