The barons established a coalition to challenge Edward II and le Despenser, and open warfare broke out between the king and the barons. At the battle of Boroughbridge in 1322, the king's forces defeated the coalition. The elder le Despenser became virtual ruler of England, instituted several important administrative reforms, and concluded peace with Scotland in 1323. In 1326 Isabella, queen consort of England, formed an alliance with the barons against Edward and the le Despensers in favor of Edward's and Isabella's son, young Prince Edward. In a general uprising, the forces of Edward II were defeated and both father and son le Despenser were hanged."
"Edward again futilely invaded Scotland in 1322, and in 1323 signed a 13-year truce with Bruce. In 1325 Queen Isabella accompanied the Prince of Wales to France, where, in accordance with feudal custom, he did homage to king Charles IV for the fief of Aquitaine. Isabella, who desired to depose the le Despensers, allied herself with some barons who had been exiled by Edward. In 1326, with their leader, Roger de Mortimer, Isabella raised an army and invaded England. Edward and his favorites fled, but his wife's army pursued and executed the le Despensers and imprisoned Edward. In January 1327, Parliament forced Edward to resign and proclaimed the Prince of Wales king as Edward III. On September 21 of that year Edward II was murdered by his captors at Berkeley Castle, Gloucestershire."