Isaac Ewer

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Isaac Ewer (died about 1650) was an English soldier who backed Parliament and became one of the regicides of King Charles I.

Born in Essex and described later as being of Hatfield Broad Oak, he started life as a servant-man before joining the parliamentary army in 1642. He rose to become a colonel of foot and helped capture Chepstow Castle in May 1648. During the Second Civil War he fought at the siege of Colchester and was part of the council that condemned Sir Charles Lucas and Sir George Lisle.

Ewer presented to the House of Commons, on 20 November 1648, the army’s declaration demanding that Charles I be brought to justice. Ten days later he was placed in charge of the king at Hurst Castle and became its governor. He was chosen as one of the judges at Charles I’s trial, attended every day, and signed the warrant for the king’s execution.

In April 1649 his regiment was sent to Ireland. He took part in the storming of Drogheda on 10 September, and later fought at Clonmel in May 1650 and helped Ireton in reducing Waterford in the summer of 1650. He died suddenly of the plague after Waterford surrendered on 10 August and was buried there.

As a regicide, his estate was confiscated after the Restoration under the Indemnity and Oblivion Act. He had married Joan Thurloe, sister of John Thurloe, in 1633; she died before him.