The Siege of York in 1644 was a prolonged contest for York during the English Civil War, between the Scottish Covenanter Army and the Parliamentarian Armies of the Northern Association and Eastern Association on the one hand, and the Royalist Army under the Marquess of Newcastle on the other. It lasted from 22 April until 1 July when the city was relieved by Prince Rupert of the Rhine. Rupert and Newcastle were defeated the next day at the decisive Battle of Marston Moor, and the siege resumed until the city was surrendered on easy terms on 16 July.