Background
He was the son of John Dawson, 1st Earl of Portarlington (1744–1798) who had been created Earl of Portarlington in 1785. His mother was Lady Caroline Stuart (before 1763–1813) the fifth daughter of John Stuart, 3rd Earl of Bute.
He was the son of John Dawson, 1st Earl of Portarlington (1744–1798) who had been created Earl of Portarlington in 1785. His mother was Lady Caroline Stuart (before 1763–1813) the fifth daughter of John Stuart, 3rd Earl of Bute.
He began his career as an ensign in the 20th Foot in March 1798 and was promoted to Lieutenant in December of the same year. On 24 March 1800 he was promoted to captain in the 46th Foot before transferring to the 23rd Light Dragoons. After a spell as a major in the 4th Garrison Battalion and as a lieutenant colonel in the 10th Foot he returned to the 23rd Dragoons on 6 April 1809.
Dawson served during the Peninsular Campaign and at the Battle of Talavera.
Waterloo Campaign
Although he commanded his regiment at the Battle of Quatre Bras on October 16–17, 1815, Dawson failed to appear at the head of his dragoons on the morning the Battle of Waterloo a day later. The reason for his non-appearance is unknown but it has been speculated that he was advised not to go by a surgeon or that "he had betaken himself that same evening to Brussels or elsewhere." Although he joined the 18th Hussars towards the end of the battle and took part in Major General Sir Hussey Vivian"s decisive charge, he resigned from the army shortly afterwards.
Dawson died at his residence in the Kennington Road in Lambeth, London, on 28 December 1845. He is buried in Catatacomb Bachelor in Kensal Green Cemetery, London.