| Pre-Nominals: | The Right Honourable |
| Birth Date: | 3 May 1773 |
| Birth Place: | Durham, County Durham, England |
| Death Place: | Holyrood Palace, Edinburgh |
| Nationality: | Scottish |
| 11th Earl of Strathmore and Kinghorne | |
| Children: | 3 |
| Mother: | Mary Bowes |
| Father: | John Bowes, 9th Earl of Strathmore and Kinghorne |
Thomas Lyon-Bowes, 11th Earl of Strathmore and Kinghorne (3 May 177327 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 was the great-great-grandfather of Queen Elizabeth The Queen Mother.[1]
Lyon-Bowes's eldest brother was John Bowes, 10th Earl of Strathmore and Kinghorne, who had a long affair with Mary Milner. 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. Lyon-Bowes was their only legitimate heir, and became the new Earl of Strathmore and Kinghorne on 3 July 1820.
On 25 March 1800, Lyon-Bowes married firstly Mary Elizabeth Louisa Rodney Carpenter (1 January 17831 June 1811), only daughter and heir of George Carpenter, Esq.[2] [3] (1713–1782) and his wife Mary Elizabeth Walsh (1758–1812).[4] They had two children:
His second wife was Elizabeth Northcote, daughter to a Colonel of the British Army. Their marriage was solemnized at St George the Martyr, Southwark on 6 September 1812.[6] There are no records of when or if the marriage was dissolved. They had one daughter:
On 8 December 1817, Lyon-Bowes married his third wife, Marianna Cheape, daughter of Captain John Cheape. This marriage remained childless but lasted until his death in 1846.
He was succeeded as the 12th Earl of Strathmore by his grandson Thomas Lyon-Bowes.