T. F. Tout, The history of England, from the accession of Henry III. to the death of Edward III.…
“ Meanwhile Louis IX. marshalled a vast host at Chinon, which from April to July overran the patrimony of the house of Lusignan, and forced many of the confederate barons to submit. Peter of Savoy and John Mansel, Henry's favourite clerk, then made seneschal of Gascony, assembled the Aquitanian levies, while Peter of Aigueblanche, the Savoyard Bishop of Hereford, went to Provence to negotiate the union between Earl Richard and Sanchia, and, if possible, to add Raymond Berengar to the coalition against the husband of his eldest daughter. ”
