In 1262, by the failure of heirs male, Isabella, daughter of Baldwin, seventh Earl, and his wife, Amicia, became Countess of Devonshire. This masterful lady married William de Fortibus, Earl of Albemarle, and, surviving her husband and children for more than thirty years, exercised despotic sway over the wide domains belonging to her. She erected a weir across the River Exe, even now called Countess Weir, for the benefit, as she declared, of her mills situated on both banks, though the citizens of Exeter were of different opinion, and on their oaths did aver that the Countess had “made a great Purpresture or Nusance ... to the Annoyance, Hurt and Damage of the said City.” At her death, in 1292, the Earldom of Devon reverted to Sir Hugh Courtenay, second of the name, Baron of Okehampton, through his great-grandmother, Mary de Rivers, daughter of William de Ripariis, Redvers or Rivers, sixth Earl. Some forty years after the death of his predecessor, Sir Hugh was summoned by writ, without any further creation, to take his seat as Earl, but before then he participated in many Parliaments as a Baron, both Stowe and Holinshed alleging that he was one of the two Lords of that rank who carried a solemn message to King Edward II., demanding from him the abdication of the throne. Chiefly by means of judicious matrimonial alliances, the first members of the English Courtenays added largely to their rank and possessions. Following the good example, Hugh, third of the name and second Earl, wedded, in 1325, Margaret, daughter of Humphrey de Bohun, Earl of Hereford, Lord High Constable of England, by her obtaining that appanage associated so intimately with the Courtenay name as known in their own county, the beautiful castle and demesne of Powderham. Earl Hugh assigned this residence and estate to his younger son, Philip, from whom is descended the present branch of the family. High in rank, possessed of great territory, honoured in the council, foremost in the fray, for a hundred and fifty years the Courtenays of Devon occupied a great place in English history. They took part in the battles of Halidon Hill, Creçy, the siege of Rouen, the triumphal entry into Paris; as Admirals of the West, repelled invasion; as Governors of the County, exercised extensive jurisdiction; and in their just pride of station, contended with the Earls of Arundel as to who should take precedence as premier Peer in the degree which they held. Their functions, when acting as rulers of the county, were varied, for it is stated that in 1383 a command was issued to them by the King, ordering the punishment of “certain malefactors and troublers of our peace ... come lately to Topsham and by force of arms have taken Peter Hill, a certain messenger of the Venerable Father, William, Archbishop of Canterbury, and with no small cruelty and threatening compelled him to eat the wax of a certain seal of the said Archbishop.”