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?

full_context: Document 1: Mary Anna Marten: Mary Anna Sibell Elizabeth Marten, OBE (1929–2010) was born Mary Anna Sibell Elizabeth Sturt on 12 September 1929 at Moor Critchel, the daughter of Napier Sturt, 3rd Baron Alington and Lady Mary Sibell Ashley-Cooper, daughter of the 9th Earl of Shaftesbury, sometime Lord Steward to the Household of George V & Queen Mary, by his wife Lady Constance Sibell Grosvenor (d 1957), a great friend of Queen Mary, dau of Earl Grosvenor, and sister of Hugh Grosvenor, 2nd Duke of Westminster. She was god-daughter to Queen Elizabeth (later The Queen Mother), and in 1953 her son Napier was a page at the Coronation of Elizabeth II.
Document 2: Henrietta Godolphin, 2nd Duchess of Marlborough: Henrietta Godolphin, 2nd Duchess of Marlborough (19 July 1681 – 24 October 1733) was the daughter of John Churchill, 1st Duke of Marlborough, general of the army, and Sarah Jennings, Duchess of Marlborough, close friend and business manager of Queen Anne.
Document 3: Mary Hamilton, Duchess of Abercorn: Mary Anna Hamilton, Duchess of Abercorn (née Curzon-Howe; 23 July 1848 – 10 May 1929), was an English aristocrat. She was the daughter of Richard Curzon-Howe, 1st Earl Howe and Anne Gore.
Document 4: Mary Sackville, Countess of Dorset (1669–1691): Lady Mary Compton (1669 – 6 August 1691), later Mary Sackville, Countess of Dorset, was a member of Queen Mary II's court. She was one of the Hampton Court Beauties painted by Sir Godfrey Kneller for Queen Mary. She was Lady of the Bedchamber to Queen Mary II.
Document 5: George I of Great Britain: George I (George Louis; German: "Georg Ludwig" ; 28 May 1660 – 11 June 1727) was King of Great Britain and Ireland from 1 August 1714 until his death, and ruler of the Duchy and Electorate of Brunswick-Lüneburg (Hanover) in the Holy Roman Empire from 1698.
Document 6: Robert Spencer, 4th Earl of Sunderland: Robert Spencer, 4th Earl of Sunderland (24 October 1701 – 15 September 1729) was a British peer from the Spencer family, the son of the Whig politician, Charles Spencer, 3rd Earl of Sunderland. His mother was Lady Anne Churchill, the daughter of John Churchill, 1st Duke of Marlborough and Sarah Churchill, Duchess of Marlborough. Known as Lord Spencer between 1702 and 1722, he succeeded to the Earldom after his father's death in, but died in 1729 with no children. Therefore, his brother, Charles, became 5th Earl of Sunderland, and subsequently 3rd Duke of Marlborough after the death of his aunt, Henrietta Godolphin ("née" Churchill), 2nd Duchess of Marlborough.
Document 7: Kingdom of Scotland: The Kingdom of Scotland (Scottish Gaelic: "Rìoghachd na h-Alba" ; Scots: "Kinrick o Scotland" ) was a sovereign state in northwest Europe traditionally said to have been founded in 843, which joined with the Kingdom of England to form a unified Kingdom of Great Britain in 1707. Its territories expanded and shrank, but it came to occupy the northern third of the island of Great Britain, sharing a land border to the south with the Kingdom of England. It suffered many invasions by the English, but under Robert I it fought a successful war of independence and remained a distinct state in the late Middle Ages. In 1603, James VI of Scotland became King of England, joining Scotland with England in a personal union. In 1707, the two kingdoms were united to form the Kingdom of Great Britain under the terms of the Acts of Union. From the final capture of the Royal Burgh of Berwick by the Kingdom of England in 1482 (following the annexation of the Northern Isles from the Kingdom of Norway in 1472) the territory of the Kingdom of Scotland corresponded to that of modern-day Scotland, bounded by the North Sea to the east, the Atlantic Ocean to the north and west, and the North Channel and Irish Sea to the southwest.
Document 8: List of British monarchs: There have been 12 monarchs of the Kingdom of Great Britain and the United Kingdom (see Monarchy of the United Kingdom) since the merger of the Kingdom of England and the Kingdom of Scotland on 1 May 1707. England and Scotland had been in personal union under the House of Stuart since 24 March 1603. On 1 January 1801, Great Britain merged with the Kingdom of Ireland (also previously in personal union with Great Britain) to form the United Kingdom of Great Britain and Ireland. After most of Ireland left the union on 6 December 1922, its name was amended on 12 April 1927 to the United Kingdom of Great Britain and Northern Ireland.
Document 9: Prince George of Denmark: Prince George of Denmark and Norway, Duke of Cumberland (Danish: "Jørgen" ; 2 April 165328 October 1708), was the husband of Queen Anne, who reigned over Great Britain from 1702.
Document 10: Anne, Queen of Great Britain: Anne (6 February 1665 – 1 August 1714) became Queen of England, Scotland and Ireland on 8 March 1702. 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. She continued to reign as Queen of Great Britain and Ireland until her death.
Document 11: Mary Osborne, Duchess of Leeds: Mary Osborne, Duchess of Leeds (1723 – 3 August 1764), 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 Queen Anne of Great Britain: the famous general and politician John Churchill, 1st Duke of Marlborough, and his wife Sarah, Duchess of Marlborough, through her mother; and Sidney Godolphin, 1st Earl of Godolphin, through her father.
Document 12: Sophia of Hanover: Sophia of the Palatinate (commonly referred to as Sophia of Hanover; 14 October 1630 – 8 June 1714) was the Electress of Hanover from 1692 to 1698. As a granddaughter of James VI and I, she became heir presumptive to the crowns of the Kingdom of England and the Kingdom of Ireland under the Act of Settlement 1701. After the Acts of Union 1707, she became heir presumptive to the unified throne of the Kingdom of Great Britain. She died less than two months before she would have become queen, and her claim to the throne passed on to her eldest son, George Louis, Elector of Hanover, who ascended as George I on 1 August 1714 (Old Style).
Document 13: John Churchill, Marquess of Blandford: John Churchill, Marquess of Blandford (13 February 1686 20 February 1703) (sometimes called Charles Churchill) was a British nobleman. He was the heir apparent to the Dukedom of Marlborough as the only surviving son of John Churchill, 1st Duke of Marlborough, an accomplished general, and Sarah Churchill, Duchess of Marlborough, a close friend of Queen Anne. Blandford died childless in 1703, and upon his father's death in 1722, the dukedom passed to his eldest sister, Lady Henrietta Godolphin (née Churchill).
Document 14: Louise de Kérouaille, Duchess of Portsmouth: Louise Renée de Penancoët de Kérouaille, Duchess of Portsmouth (September 1649 – 14 November 1734) was a mistress of Charles II of England. Through her son by Charles II, Charles Lennox, 1st Duke of Richmond, she is ancestress of both wives of Prince Charles: Diana, Princess of Wales, and Camilla, Duchess of Cornwall.
Document 15: Charlotte of Mecklenburg-Strelitz: Charlotte of Mecklenburg-Strelitz (Sophia Charlotte; 19 May 1744 – 17 November 1818) was by marriage to King George III the Queen of Great Britain and Ireland from her wedding in 1761 until the union of the two kingdoms in 1801, after which she was Queen of the United Kingdom of Great Britain and Ireland until her death in 1818. She was also the Electress of Hanover in the Holy Roman Empire until the promotion of her husband to King of Hanover on 12 October 1814, after which she was also queen consort of Hanover.
ground_truth: Queen Anne of Great Britain