Question: Who is Thomas Lyon, 8Th Earl Of Strathmore And Kinghorne's paternal grandfather?

Context paragraphs:
title: Henry Liddell (priest)
paragraph_text: Henry George Liddell( 1787 — 9 March 1872) was an English clergyman. Liddell was born at Ravensworth Castle, the son of Sir Henry Liddell, 5th Baronet. He studied at Brasenose College, Oxford, was ordained in 1811 and was appointed rector of Redmarshall that year. He was subsequently rector of Boldon in 1814, Romaldkirk in 1824, Whickham in 1829 and Easington in 1832. On 11 November 1809, he married Charlotte Lyon, a daughter of Thomas Lyon and granddaughter of Thomas Lyon, 8th Earl of Strathmore and Kinghorne. They had six children: Liddell died at Charlton Kings, Oxfordshire on 9 March 1872, aged 85.
title: John Lyon, 5th Earl of Strathmore and Kinghorne
paragraph_text: John Lyon, 5th Earl of Strathmore and Kinghorne( 1696 – 13 November 1715) was a Scottish peer and nobleman. He was the son of John Lyon, 4th Earl of Strathmore and Kinghorne. He died fighting with the Jacobites in The Battle of Sheriffmuir in 1715.
title: Thomas Lyon-Bowes, 12th Earl of Strathmore and Kinghorne
paragraph_text: Thomas Lyon-Bowes, 12th Earl of Strathmore and Kinghorne( 28 September 1822 – 13 September 1865), styled Lord Glamis between 1834 and 1846, was a Scottish peer and cricketer.
title: John Lyon, 4th Earl of Strathmore and Kinghorne
paragraph_text: John Lyon, 4th Earl of Strathmore and Kinghorne( 1663 – 1712) was a Scottish nobleman and peer. He was the son of Patrick Lyon, 3rd Earl of Strathmore and Kinghorne. He married Elizabeth Stanhope on 21 September 1691 and was succeeded as Earl by his son John Lyon, 5th Earl of Strathmore and Kinghorne.
title: Thomas Lyon-Bowes, 11th Earl of Strathmore and Kinghorne
paragraph_text: Thomas Lyon-Bowes, 11th Earl of Strathmore and Kinghorne( 3 May 1773 – 27 August 1846) was a Scottish nobleman and peer. He was the third son of John Bowes, 9th Earl of Strathmore and Kinghorne, and Mary Bowes, Countess of Strathmore and Kinghorne. His mother was the author of the verse drama," The Siege of Jerusalem"( 1769). He is the great- great- grandfather of Queen Elizabeth The Queen Mother. The eldest brother was John Bowes, 10th Earl of Strathmore and Kinghorne, who had a long affair with Mary Millner. Their only son John Bowes was only legitimized following the demise of his father. He inherited most of the real estate of his father, but none of his titles. The second brother was George Bowes- Lyon who had married Mary Thornhill, but died childless on 26 December 1806. Thomas was their only legitimate heir and became the new Earl of Strathmore and Kinghorne on 3 July 1820. On 25 March 1800, Thomas married firstly Mary Elizabeth Louisa Rodney Carpenter( 1 January 1783 – 1 June 1811), daughter of George Carpenter( 21 October 1713 – 10 November 1782) and his wife Mary Elizabeth Walsh( bap. 18 May 1758, d. 27 November 1812). They had two children: His first wife died on 1 June 1811. He married secondly Eliza Northcote, daughter to a Colonel of the British Army. They had a daughter: On 8 December 1817, Thomas married his third wife Marianna Cheape, daughter of John Cheape. This marriage was childless but lasted until his death. He was succeeded by his grandson Thomas Lyon-Bowes, 12th Earl of Strathmore and Kinghorne.
title: Thomas Lyon-Bowes, Lord Glamis
paragraph_text: Thomas George Lyon-Bowes, Lord Glamis (6 February 1801 – 27 January 1834) was an heir to the Earldom of Strathmore and Kinghorne. He was the only son of Thomas Lyon-Bowes, 11th Earl of Strathmore and Kinghorne and Mary Elizabeth Louisa Rodney Carpenter. He is the great grandfather of Queen Elizabeth, the Queen Mother. On 21 December 1820, he married Charlotte Grimstead, daughter of Joseph Valentine Grimstead, of Ewood Park and Merry Hall, and Charlotte Jane Sarah Walsh. They had seven children: Thomas died at the age of 32 in Honfleur, France; leaving his wife – Lady Glamis – very little money to bring up their four surviving children. His eldest son, Thomas Lyon-Bowes became the heir to the Earldom of Strathmore and Kinghorne.
title: James Lyon, 7th Earl of Strathmore and Kinghorne
paragraph_text: James Lyon, 7th Earl of Strathmore( circa 1702 – 1735) was a Scottish peer and freemason. He was the son of John Lyon, 4th Earl of Strathmore and Kinghorne and Lady Elizabeth Stanhope. He was christened on 24 December 1702. He succeeded as Earl of Strathmore following the stabbing of Charles Lyon, 6th Earl of Strathmore and Kinghorne in a drunken altercation in 1728. On 6 March 1731 he married Mary Oliphant, daughter of Charles Oliphant( brother of William Oliphant, 11th Lord Oliphant). He died without issue on 4 January 1735 at Edinburgh, Scotland. He was succeeded as earl by his younger brother, Thomas Lyon, 8th Earl of Strathmore and Kinghorne, ancestor of Elizabeth Bowes – Lyon, the Queen Mother.
title: Thomas Lyon, 8th Earl of Strathmore and Kinghorne
paragraph_text: Thomas Lyon, 8th Earl of Strathmore MP (1704 – 18 January 1753) was a Scottish nobleman, and Tory politician who sat in the House of Commons from 1734 to 1735 when he succeeded to the peerage as Earl of Strathmore. Lyon was baptized on 6 July 1704, the seventh son of John Lyon, 4th Earl of Strathmore and Kinghorne, and his wife Lady Elizabeth Stanhope daughter of Philip Stanhope, 2nd Earl of Chesterfield. Lyon was returned as Tory Member of Parliament (MP) for Forfarshire on the Strathmore interest at the 1734 British general election. He vacated his seat when he succeeded his brother to the peerage on 4 January 1735. On 20 July 1736, Strathmore married Joan (or Jean) Nicholson, daughter of James Nicholson of West Rainton, county Durham at Houghton-le-Spring. He died on 18 January 1753, leaving three sons and four daughters:
title: Mary Bowes, Countess of Strathmore and Kinghorne
paragraph_text: Mary Eleanor Bowes, Countess of Strathmore and Kinghorne( 24 February 1749 – 28 April 1800), known as" The Unhappy Countess", was an 18th- century British heiress, notorious for her licentious lifestyle, who was married at one time to the 9th Earl of Strathmore and Kinghorne. She and the Earl are ancestors of Queen Elizabeth II.
title: Michael Bowes-Lyon, 17th Earl of Strathmore and Kinghorne
paragraph_text: Fergus Michael Claude Bowes- Lyon, 17th and 4th Earl of Strathmore and Kinghorne( 31 December 1928 – 19 August 1987), was a British nobleman and peer. He was a nephew of Queen Elizabeth The Queen Mother( born Elizabeth Bowes- Lyon), and a first cousin of Queen Elizabeth II and Princess Margaret. He was the son of Capt. The Hon. Michael Claude Hamilton Bowes- Lyon and Elizabeth Margaret Cator. His paternal grandparents were Claude Bowes- Lyon, 14th Earl of Strathmore and Kinghorne and Cecilia Cavendish- Bentinck. He married Mary Pamela McCorquodale( b.1932) on 10 April 1956. They had three children: He inherited the earldom of Strathmore and Kinghorne upon the death of his first cousin Timothy Bowes- Lyon, 16th Earl of Strathmore and Kinghorne. He was succeeded by his son.

Reasoning steps:
Thomas Lyon, 8th Earl of Strathmore and Kinghorne father John Lyon, 4th Earl of Strathmore and Kinghorne
John Lyon, 4th Earl of Strathmore and Kinghorne father Patrick Lyon, 3rd Earl of Strathmore and Kinghorne

Answer: spans: Patrick Lyon, 3rd Earl of Strathmore and Kinghorne