 Complete the following phrase:  In 1644, Charles remained in the southern half of England while Rupert rode north to relieve Newark and York, which were under threat from parliamentary and Scottish Coveter armies. Charles was victorious at the battle of Cropredy Bridge in late June, but the royalists in the north were defeated at the battle of Marston Moor just a few days later. The king continued his campaign in the south, encircling and disarming the parliamentary army of the Earl of Essex. Returning northwards to his base at Oxford, he fought at 