 England slipped back into the Second Barons' War, which was won by Henry's son, the Lord Edward.Edward also invoked Magna Carta in advancing his cause, arguing that the reformers had taken matters too far and were themselves acting against Magna Carta.In a conciliatory gesture after the barons had been defeated, in 1267 Henry issued the Statute of Marlborough, which included a fresh commitment to observe the terms of Magna Carta.