When Henry III came to the throne in 1216, much of his holdings on the continent were occupied by the French and many of the barons were in rebellion as part of the First Barons' War. Marshall won the war with victories at the battles of Lincoln and Dover in 1217, leading to the Treaty of Lambeth by which Louis renounced his claims. In victory, the Marshal Protectorate reissued the "Magna Carta" agreement as a basis for future government. Despite the treaty hostilities continued and Henry was forced to make significant constitutional concessions to the newly crowned Louis VIII of France and Henry's stepfather Hugh X of Lusignan. Between them, they overran much of the remnants of Henry's continental holdings, further eroding the Plantagenet grip on the continent. Henry saw such similarities between himself and England's then patron saint Edward the Confessor in his struggle with his nobles that he gave his first son the Anglo-Saxon name Edward and built the saint a magnificent, still-extant shrine at Westminster.