Marshfield was a casualty of the Battle of Lansdown (July 1643) during the Civil War. A Royalist army under Prince Maurice and Sir Bevil Grenville were hoping to link up with Charles I at Oxford and avoid a confrontation with the Parliamentary Forces gathered at Bath under Sir William Waller. Marshfield, which had about 300 houses at that time, on 4 July was used as an overnight billet and provision store for the King's army of 6000. Next day the royalists were tempted into an abortive Battle at Lansdown, each side withdrawing with heavy losses. Sir Bevil Grenville (whose monument now stands on the site of the battle) died in Cold Ashton rectory and as the Royalists fell back on Marshfield for repairs almost every house had wounded men on its hands. When the depleted army moved on the reinforced Cromwellian army soon followed. There was little time to stow away the church's simple treasures before the invading despoilers were at work. As a piece of local doggerel composed 200 years later had it "The empty niche above the door, where Mary's image stood, And ravaged reredos testify to their revengeful mood."