 However, in 1275 she had bequeathed all her properties to her nephew Jourdain de l'Isle.He had pledged his allegiance to Edward I, son of Eleanor of Provence who became king of England in 1272.To continue the policy of fortifying the area it was decided in 1284 to construct a bastide on the lands at Vilalonga and it was named after Vianne de Gontaud Biron.