William Jones (Parliamentarian)

William Jones (c. 1590 – 1669) was an English politician who sat in the House of Commons at various times between 1621 and 1660.

Jones was the son of William Jones of Castellmarch, Caernarvonshire, and his wife Margaret Lewis, daughter of Thomas Lewis of Llanllear. He matriculated at Jesus College, Oxford, on 14 June 1605, aged 15. He was called to the bar at Lincoln's Inn in 1614.

In 1621, Jones was elected Member of Parliament for Beaumaris. He was re-elected MP for Beaumaris in 1624 and 1625. He was High Sheriff of Anglesey in 1626.

In April 1640, Jones was elected MP for Beaumaris in the Short Parliament. He was re-elected MP for Beaumaris in November 1640 for the Long Parliament. He survived Pride's Purge in 1648 that excluded many members who were not supportive of the army. He was one of the Commissioners who sat in judgment on King Charles I and signed the King's death warrant.

After the Restoration, Jones was excluded from the Indemnity and Oblivion Act. He died in 1669.

He married Margaret Lloyd, daughter of Hugh Lloyd of Bodwigan. They had three sons and three daughters.