Williams, who may have joined Brooks’s Club on 11 May 1816, came in for Great Marlow on the dominant family interest in 1820.
Williams was absent from the division on Catholic relief, 6 Mar. 1827. He voted to withhold supply until the ministerial crisis following Lord Liverpool’s stroke had been resolved, 30 Mar. 1827. He presented a Marlow petition for repeal of the Test Acts, 19 Feb. 1828, and voted for that measure a week later. As expected by the Wellington ministry, who did not now regard him as being in regular opposition, he divided for Catholic emancipation, 6, 30 Mar. 1829. He may have voted for the amendment to the address, 4 Feb. 1830. He was credited with dividing for the transfer of East Retford’s seats to Birmingham, 11 Feb., but against the enfranchisement of Birmingham, Leeds and Manchester, 23 Feb. With his father, he voted against the sale of beer bill, 4 May, 21 June. He moved unsuccessfully to adjourn the debate on the second reading of the bill to reorganize the Welsh judicial system, 27 Apr., and voted in a minority of 30 against it, 18 June. He divided against Jewish emancipation, 17 May 1830. In September Williams, like his father, was considered a ‘friend’ by the government, after being listed initially as one of the ‘good doubtfuls’; but he was absent from the crucial division on the civil list, 15 Nov. 1830. He joined his father in voting against the second reading of the Grey ministry’s reform bill, 22 Mar., and for Gascoyne’s wrecking amendment, 19 Apr. 1831. He divided against the second reading of the reintroduced measure, 6 July, paired against combining Rochester with Chatham and Strood, 9 Aug., and voted to preserve freemen’s rights, 30 Aug. On the proposal to deprive Marlow of one seat, 15 Sept., he argued that it deserved to retain both, like its neighbour Chipping Wycombe, a Whig stronghold towards which ministers had shown ‘gross partiality’. He voted against the passage of the bill, 21 Sept. He took three weeks’ leave to attend to urgent business, 6 Oct. He divided against the second reading of the revised reform bill (which reprieved Marlow), 17 Dec. 1831, but only paired against the third reading, 22 Mar. 1832, a month after succeeding his father in the family’s Berkshire and Anglesey estates. He voted against the second reading of the Irish reform bill, 25 May, and paired with opposition on the Russian-Dutch loan, 12 July 1832.
At the general election of 1832 Williams, ‘a stubborn Conservative, stung by the loss of a seat for Marlow’ to a reformer on his father’s death, withdrew from the Pagets of Plas Newydd the support which his grandfather and father had given to their electoral interests in Anglesey and North Wales.
