Carew had sat almost uninterrupted on the family interest for County Wexford since 1812 as a firm but moderate Liberal. He remained personally popular for the efforts he had made to open the representation of the county which his father, an opponent of the Union, had represented from 1806-7.
Carew declared his intention to ‘assist in restoring peace’ to Ireland and as an active magistrate felt unable to attend O’Connell’s National Council meeting in Dublin in January 1833.
Carew voted for Lord Althorp’s motion on church rates, 21 Apr. 1834, and divided against O’Connell’s repeal motion, 29 Apr. However, although he refused an appeal from fellow Irish Liberals to move the postponement of the second reading of the government’s Irish tithes bill, 2 May, he did propose that further discussion of the measure be delayed for one week so as to allow the Irish members to examine its provisions, and consider how best the payment of tithes could ‘be fairly levied’. Despite enlisting the backing of the repeal party and other advanced Liberals for his motion, it was defeated by 74-241.
Rumours that Carew was about to be raised to the peerage circulated for almost a year before the Grey ministry rewarded him with an Irish barony in June 1834. He does not appear to have sought a return to the Commons as an MP for a constituency outside Ireland, and in July 1838 his barony was upgraded to a United Kingdom peerage, when he took his place in the House of Lords.
Carew died at Castleborough in June 1856 after a long illness and was buried in the family vault in Killegney church.
