Butler had retired from Kilkenny city at the dissolution of 1820, but later that year was seated for the county on the family interest in place of his elder brother James, who had succeeded as earl of Ormonde. Returned unopposed in absentia (a supporter attributed his detention in England to the prolonged ill health of his wife), as a gesture of commitment he pledged to divest himself of the residence at Ulcombe, Kent, left to him by his eldest brother Walter, 18th earl of Ormonde, whose wife’s maiden name of Clarke he took as an additional surname. He evidently retained the estate, for it later passed to his second son Henry Thomas (1815-85).
At the 1826 general election an attempt was made to turn him out of county Kilkenny on account of his hostility to the Catholic Association, but he stood again and comfortably topped the five-day poll.
He welcomed the Wellington ministry’s concession of Catholic emancipation, observing that it should have been made at the time of Union, that he ‘would far rather see a Catholic occupying my place in the House than be here myself’, and that although the cause had been assisted by the Catholic Association (which he had come to admire), he was willing to acquiesce in its suppression, 13 Feb. 1829. He presented favourable petitions, 10 Mar., when he reiterated his view that discontent over tithes had been exaggerated, 25 Mar., and voted accordingly, 6, 30 Mar (as a pair). On the 16th he deplored the preaching of an anti-Catholic sermon to the boys at Eton. He was confident that the Irish people would accept the disfranchisement of the 40s. freeholders as the price of emancipation, but insisted that this should be contingent on its passage, 20 Mar. He twice queried the wording of the proposed new oath of allegiance, 23 Mar. He presented Kilkenny petitions against the disfranchisement and the Irish Subletting Act, 25 Mar. He voted to allow Daniel O’Connell to take his seat unhindered, 18 May 1829. Three days later he declared that troops could be safely spared from the Irish garrison, ‘such is the beneficial consequence of the late measure’. His only known votes of 1830 were in the minorities for parliamentary reform, 18 Feb., abolition of the Irish lord lieutenancy, 11 May, and proper use of Irish first fruits, 18 May 1830.
At the 1830 dissolution Butler Clarke retired in favour of his nephew Lord Ossory, ‘conscious’ of having fulfilled his duties in a ‘very imperfect manner’, not ‘from any want of inclination to serve you’, but because of having a ‘more paramount duty to perform’, which probably referred to his wife’s health.
