Thomas Lyon-Bowes, Lord Glamis

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 Lyon-Bowes (18 October 1821 – 18 October 1821)
• Thomas Lyon-Bowes, 12th Earl of Strathmore and Kinghorne (28 September 1822 – 13 September 1865)
• Claude Bowes-Lyon, 13th Earl of Strathmore and Kinghorne (21 July 1824 – 16 February 1904), ancestor of Queen Elizabeth II.
• Charlotte Lyon-Bowes (15 May 1826 – 22 October 1844)
• Herbert Lyon-Bowes (1828 – died in infancy)
• Arthur Lyon-Bowes (1830 – died in infancy)
• Frances Lyon-Bowes (8 February 1832 – 27 January 1903), raised to the rank of an earl's daughter (with the style of Lady Frances) in 1847, married Hugh Charles Bettesworth Trevanion

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.