In the in his biography of William Marshal, Thomas Asbridge wrote:“William also possessed innate qualities and acquired skills that set him apart. Marshal’s raw physicality allowed him to absorb battering blows that might fell others, while his strength lent jarring force to the attacks he delivered with either lance or sword. Few could match the assured agility of his horsemanship and a canny, guileful strategic awareness meant that he was able to outthink opponents.” He was not only a very skilful knight, from relatively humble beginnings being the son of a minor lord, he rose to the importance of being regent to the young Henry III and saving England from having a French monarch. He worked for five kings from Henry II to Henry III, as well as Henry II’s eldest son, Henry, who died before his father. In the reign of King John, the barons rebelled against their monarch and it was Marshall who played a key part in advising the king to sign Magna Carta and gain peace at least for a short time. John soon renaged on the Charter but soon after his death, William sealed the charter in the name of John’s young successor, Henry III and people’s rights in England were guaranteed forever.(see the next section for details).