Question: Whom was the sister of a prominent figure in the Restoration court and an influential friend of Queen Anne of Great Britain?
Sentence (from "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.
Relevant evidence: Yes