Robert Latouche, 1911 Encyclopædia Britannica (1911)
“ On the death of Richard at Chalus in 1199 the position of Philip Augustus was critical. This situation was modified under the reign of John Lackland, Richard's brother, who had himself crowned duke of Normandy at Rouen (April 25, 1199) . Philip Augustus set up in opposition to him, Arthur of Brittany, son of Geoffrey and grandson of Henry II., and the first phase of the struggle between the kings of France and England continued until the treaty of Goulet (1200) . But in 1202 Philip made a fresh attempt to seize the continental possessions of the kings of England. ”
