 Matilda married Henry de Tracy (died 1274), feudal baron of Barnstaple, who according to Pole made Tawstock his seat, apparently having abandoned Barnstaple Castle as the chief residence of the Barons of Barnstaple.Tawstock then descended via her daughter Eve de Tracy., by her husband Henry de Tracy (died 1274), feudal baron of Barnstaple.Henry de Tracy's heir to the entire barony, including 2/3rds of the manor of Tawstock, was his granddaughter Maud de Brian (or Briene) (died before 1279), daughter of Guy de Brian of Laugharne Castle, Carmarthenshire by his wife Eve de Tracy, daughter of Henry de Tracy.