Born at the family seat of Emo Court, Queen’s County, Dawson was one of nine children of the 1st earl of Portarlington, and Lady Caroline Stuart, whose father was the former prime minister, Lord Bute.
Dawson served in the 1st Dragoon Guards, visiting Russia in 1812 as aide-de-camp to Sir Robert Wilson,
Dawson stood unsuccessfully for County Tipperary at the 1826 general election in the Damer interest as a ‘strenuous friend of Catholic emancipation’. In 1830 he came forward again but declined to go to the poll, and made way for the radical Robert Otway Cave in 1831.
Having declared himself ‘decidedly Conservative’, Dawson Damer was returned unopposed on his brother’s interest for Portarlington in 1835, being ‘anxious to reform real abuses’ such as the system of tithes, while showing ‘a just regard to the conservation of our inestimable constitution’.
In the following session, Dawson Damer generally divided with the Conservatives, opposing the abolition of church rates, 25 May 1837, and dividing against a motion to reconsider the corn laws, 15 Mar. 1838. He supported Lord Sandon’s motion blaming government policy for the rebellion in Canada, 7 Mar., but declined ‘from considerations of private friendship’ to vote for Lord Chandos’s subsequent motion concerning the expense of Lord Durham’s mission to Canada.
Dawson Damer held a prominent place in society, attending the coronation of the Ferdinand I of Austria as king of Lombardy and Venetia in 1838, and spending time in highest social circles in Naples and Rome in 1839.
During Dawson Damer’s long absence abroad in 1839-40, it was suggested that ‘if he should ever again appear again before the electors’ of Portarlington, he would be rejected.
Having defended the corn laws in 1841, endorsing Lord Stanley’s argument that they were not to blame for ‘the distress of manufacturers’, Dawson Damer became a late convert to free trade. He voted for the third reading of the corn importation bill, but by supporting ‘to the last the political measures’ of Peel, including his Irish coercion bill, 25 June 1846, he lost the support of a large portion of the Conservative party in his constituency.
In his final parliament Dawson Damer behaved generally as a Derbyite, but divided with the Peelites on certain issues. He supported measures favourable to Catholics, voting for the Catholic relief bill, 8 Dec. 1847, and divided with the Peelites on Hume’s amendment to the income tax resolutions, 13 Mar. 1848. Yet he supported Lord Derby over Sir John Pakington’s amendment to the West Indies relief bill, 29 June and that July he signed a resolution calling upon the government to enforce law and order in Ireland.
On foreign policy Dawson Damer identified with Lord Aberdeen and voted against Lord Palmerston in the division on the Don Pacifico affair, 28 June 1850.
Dawson Damer’s wife had died at St. Leonard’s-on-Sea in October 1848 and he survived her by more than seven years, dying after a short illness at 23 Wilton Crescent, Belgravia, in April l856.
