 However, Somerset and Courtenay left the city to rendezvous in the south-west of England with Margaret of Anjou and her son, Edward of Westminster, Prince of Wales, who were returning from France.This thwarted Warwick's hopes of trapping Edward IV between his own army and the forces in London, and cleared the way for Edward IV to occupy the capital and capture Henry VI.Warwick was defeated and killed by Edward IV at the Battle of Barnet, just outside London, on 14 April.