William Haldane British writer (1864-1951) (1864–1951) Parents Mary Elizabeth Haldane Robert Haldane Children Graeme Haldane Mary Elizabeth Haldane Robert Patrick Haldane A. R. B. Haldane Siblings Mary Abercromby Haldane George Abercromby Haldane Margaret Isabella Haldane Robert Camperdown Haldane Elizabeth Joanna Haldane James Alexander Haldane Jane Haldane Mary Abercromby Haldane Richard Haldane, 1st Viscount Haldane John Scott Haldane Elizabeth Haldane Partners Margaret Edith Stuart Nelson