Whom was the sister of a prominent figure in the Restoration court and an influential friend of Queen Anne of Great Britain?
Sarah Churchill, Duchess of Marlborough Sarah Churchill, Duchess of Marlborough (née Jenyns, spelt Jennings in most modern references; 5 June 1660 (Old Style) – 18 October 1744) rose to be one of the most influential women of her time through her close friendship with Queen Anne of Great Britain. Sarah's friendship and influence with Princess Anne was widely known, and leading public figures often turned their attentions to her in the hope that she would influence Anne to comply with requests. As a result, by the time Anne became queen, Sarah’s knowledge of government, and intimacy with the Queen, had made her a powerful friend and a dangerous enemy.
Lady Catherine Grey Katherine Seymour, Countess of Hertford (25 August 1540 – 26 January 1568), born Lady Katherine Grey, was the younger sister of Lady Jane Grey.