The chief authority for the bishop's life is William de Chambre, printed in Wharton's "Anglia Sacra", 1691, and in "Historiae conelmensis scriptores tres", Surtees Soc., 1839, who describes him as an amiable and excellent man, charitable in his diocese, and the liberal patron of many learned men, among these being Thomas Bradwardine, afterwards Archbishop of Canterbury, Richard Fitzralph, afterwards Archbishop of Armagh, the enemy of the mendicant orders, Walter Burley, who translated Aristotle, John Mauduit the astronomer, Robert Holkot and Richard de Kilvington. John Bale and Pits I mention other works of his, "Epistolae Familiares" and "Orationes ad Principes". The opening words of the "Philobiblon" and the "Epistolae" as given by Bale represent those of the "Philobiblon" and its prologue, of that he apparently made two books out of one treatise. It is possible that the "Orationes" may represent a letter book of Richard de Bury's, entitled "Liber Epistolaris quondam dominiis cardi de Bury, Episcopi Dunelmensis", now in the possession of Lord Harlech.