[2] Williams was returned unopposed as Tory Member of Parliament for Denbigh Boroughs at the 1708 British general election.
He told for the Tories in a division over an electoral petition and voted against the impeachment of Dr Sacheverell in 1710.
He declined to stand at the 1710 British general election, probably on account of ill-health.
In 1719, he came into the entire Wynnstay estate near Ruabon, Denbighshire, together with estates in Montgomery, Merioneth and Llangedwyn, Denbighshire, from his first wife's relative, Sir John Wynn, 5th Baronet.
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