Question: Mary Osborne, Duchess of Leeds, born Lady Mary Godolphin, was a daughter of Henrietta Godolphin, "née" Churchill, 2nd Duchess of Marlborough, and Francis Godolphin, 2nd Earl of Godolphin, making her granddaughter to the powerful government trio during the reign of which person that became Queen of England, Scotland and Ireland on 8 March 1702?
Sentence (from "Anne, Queen of Great Britain"): On 1 May 1707, under the Acts of Union, two of her realms, the kingdoms of England and Scotland, united as a single sovereign state known as Great Britain.
Relevant evidence: No