Major General Thomas Mytton, also spelt Mitton, (1597-November 1656), was a lawyer from Oswestry who served in the Parliamentarian army during the Wars of the Three Kingdoms and as MP for Shropshire in the First Protectorate Parliament.

[5] When the First English Civil War began in August 1642, the regional centre of Shrewsbury was used to assemble recruits and supplies from Royalist areas in Wales and the North West, making the area important to both sides in June 1643, Parliament appointed the Earl of Denbigh military commander of Shropshire, Warwickshire, Worcestershire and Staffordshire, Sir Thomas Myddelton filling the same role in North Wales.

[8] A joint offensive with Myddleton led to the capture of Montgomery Castle in early September, while a Royalist attempt to retake it was repulsed on 18th in the biggest battle of the war in Wales and a major victory for Parliament.

[10] His capture of Shrewsbury on 22 February 1645 forced the evacuation of remaining Royalist garrisons in central Shropshire, but local opposition to the appointment meant he did not become Governor.

[12] When Myddelton and Denbigh resigned their military offices in April 1645 under the self-denying ordinance, Mytton was promoted to Major General, made commander in North Wales and appointed High Sheriff of Shropshire.

[14] Arguments over the settlement with Charles led to conflict between moderate MPs, who held a majority in Parliament, and a radical minority, who were supported by the New Model Army.

The economic cost of the war, a poor 1646 harvest, and recurrence of the plague meant by March 1647 the troops in Wales had not been paid for eighteen months, while the New Model was owed over £3 million, an enormous sum at the time.

The revolt in the south was quickly suppressed, that in the north collapsed after he and Myddelton defeated a Royalist force at Red Hill on 1 October and recaptured Beaumaris Castle.