Question: Who is David Carnegie, 10Th Earl Of Northesk's paternal grandmother?

Context paragraphs:
title: David Carnegie, 4th Earl of Northesk
paragraph_text: David Carnegie, 4th Earl of Northesk (1675 – 14 January 1729) was a Scottish peer and politician. He was born the son of David Carnegie, 3rd Earl of Northesk and Elizabeth Lindsay. He was invested as a Privy Councillor of Scotland in 1698 and held the office of Sheriff of Forfar in 1702. He held the office of Lord Commissioner of Treasury for Scotland from 1705 until 1708. He served as a representative peer between 1708 and 1715 and was Commissioner of Trade and Manufacturers in 1711. He married Lady Margaret Wemyss, daughter of James Wemyss, Lord Burntisland and Margaret Wemyss, 3rd Countess of Wemyss, on 29 January 1697 and had five children:
title: John Talbot, 10th Earl of Shrewsbury
paragraph_text: John Talbot, 10th Earl of Shrewsbury, 10th Earl of Waterford( 1601 – 8 February 1654), was an English nobleman.
title: David Carnegie, 2nd Earl of Northesk
paragraph_text: David Carnegie, 2nd Earl of Northesk was born the son of John Carnegie, 1st Earl of Northesk and Magdalen Haliburton before 1627. He died on 12 December 1679. He married Lady Jean Maule, daughter of Patrick Maule, 1st Earl of Panmure, on 19 October 1637 and had seven children: By his third son, Patrick, he is the seventh great- grandfather of the 15th Earl of Northesk.
title: George Carnegie, 6th Earl of Northesk
paragraph_text: Admiral George Carnegie, 6th Earl of Northesk( 1716–1792) was born the son of David Carnegie, 4th Earl of Northesk and Lady Margaret Wemyss on 2 August 1716. He died on 20 January 1792 at age 75. He married Anne Melville, daughter of Alexander Melville, 5th Earl of Leven and Elizabeth Monypenny, on 30 April 1748 and had six children:
title: George Carnegie, 9th Earl of Northesk
paragraph_text: Lieutenant-Colonel George John Carnegie, 9th Earl of Northesk DL (1843 – 1891) was a British nobleman and soldier. He was born the son of William Carnegie, 8th Earl of Northesk and Georgiana Maria Elliot on 1 December 1843. He died on 9 September 1891 at age 47.
Lord Rosehill, as he then was, was commissioned into the 1st Dragoons in 1862, but transferred to the Scots Fusilier Guards as a Lieutenant later the same year. He was promoted Captain in 1866 and Lieutenant-Colonel in 1873. He retired in 1874. He married Elizabeth Georgina Frances Elliot, daughter of Admiral Sir George Elliot and Hersey Susan Sydney Wauchope, on 28 February 1865 and had four children. He rebuilt Longwood House, Hampshire, his main home. The architect was George Devey.
title: David Carnegie, 3rd Earl of Northesk
paragraph_text: David Carnegie, 3rd Earl of Northesk( 1643 – 1688) was born the son of David Carnegie, 2nd Earl of Northesk and Lady Jean Maule, daughter of Patrick Maule, 1st Earl of Panmure in November 1643. He married Elizabeth Lindsay, daughter of John Lindsay, 17th Earl of Crawford and Lady Margaret Hamilton, on 2 September 1669 and had two children:
title: David Carnegie, 11th Earl of Northesk
paragraph_text: David Ludovic George Hopetoun Carnegie, 11th Earl of Northesk (24 September 1901 – 7 November 1963) was elected a Scottish representative peer. He was also a skeleton competitor who won a bronze medal at the 1928 Winter Olympics. Carnegie was the son of David Carnegie, 10th Earl of Northesk and Elizabeth Boyle Hallowes. He was born at 6 Hans Crescent, London SW1 and educated at St. Aubyns Preparatory School, Rottingdean and Gresham's School, Holt. He succeeded his father as 11th earl on 5 December 1921 and won a bronze medal in skeleton at the 1928 Winter Olympics. From 1921 to 1923 he was on the supplementary list or reserve of Officers for the Coldstream Guards. On 19 July 1923 he married Jessica Ruth Brown, they divorced in 1928. He then married Elizabeth Vlasto, daughter of Anthony Augustus Vlasto, on 7 August 1929. During the Second World War he served in the Intelligence Corps and was demobilised as a Major in 1945, having finished his war time service at the Intelligence Corps Depot. He later farmed at Beer Farm, Binfield, Bracknell, Berkshire, as well as his parliamentary duties. He died childless in November 1963, and was succeeded by his first cousin John Carnegie, 12th Earl of Northesk. Northesk was one of a group of men who re-founded Reading Society of Model Engineers after WW2.
title: David Carnegie, 10th Earl of Northesk
paragraph_text: David John Carnegie, 10th Earl of Northesk( 1865 – 1921), a Scottish representative peer, was born the son of Lt.- Col. George Carnegie, 9th Earl of Northesk and Elizabeth Georgina Frances Elliot on 1 December 1865. He died on 5 December 1921 at age 56. He married Elizabeth Boyle Hallowes, daughter of Maj.- Gen. George Skene Hallowes, on 3 February 1894 and had two children:
title: David Carnegie, 5th Earl of Northesk
paragraph_text: David Carnegie, 5th Earl of Northesk( 11 June 1701 – 24 June 1741) was the son of David Carnegie, 4th Earl of Northesk and Lady Margaret Wemyss. He died at the age of 40, unmarried. He had, by Isabel Rarity, a son, Sylvester who was born on 16 January 1732, and married Margaret Peter on 9 June 1755.
title: William Carnegie, 7th Earl of Northesk
paragraph_text: Admiral William Carnegie, 7th Earl of Northesk GCB( 19 April 1758 – 28 May 1831) was born at Bruntsfield in Edinburgh to Admiral George Carnegie, 6th Earl of Northesk and Anne Melville.

Reasoning steps:
David John Carnegie, 10th Earl of Northesk father George Carnegie, 9th Earl of Northesk
George Carnegie, 9th Earl of Northesk mother Georgiana Maria Elliot

Answer: spans: Georgiana Maria Elliot