См.: Ashley М. Op. cit. Р. 5–6; Сохе W Memoirs of the Duke of Marlborough With His Original Correspondence: Collected From the Family Records at Blenheim and Other Authentic Sources. Vol. I–VI; Reid J.S. John and Sarah Duke and Duchess of Marlborough 1660–1744: Based on Unpublished Letters and Documents at Blenheim Palace.
