Pierre de Champvent

[2] His influence at court in 1262 is evidenced by his joining the Savoyard witness list for a charter relating to Queen Alianor's dowry.

[4] As a knight of the royal household, he took part in the capture of Northampton in 1264 and in the siege of Kenilworth Castle in 1266 during the Second Barons' War.

While Champvent under Henry III had apparently been in royal favor, it lost importance at the beginning of the rule of his son and successor King Edward I of England.

[10] During the Welsh uprising from 1294 he was part of the king's entourage when he was briefly trapped in Conwy Castle by the rebels in early 1295.

However, through his contacts with other English nobles, he managed to further expand his land holdings, so that he eventually owned properties in Sussex, Cambridgeshire and other parts of England.