John Phurnes (Φουρνῆς), a monk of the monastery of Mount Ganus, who flourished in the reign of the emperor Alexis Comnenus (11th century), was an opponent of the Latin Church, and is noted as the author of Α᾿πολογία, Defensio, or Διάλεξις, Disceptatio, a discussion which was carried on with Peter, archbishop of Milan, in the presence of the emperor. If this is the work which John Veccus cites and replies to in his De Unione Ecclsiarum Oratio (apud Allatium, Groecia Orthodoxa, 1, 179, etc.), it appears that the form of a dialogue was assumed for convenience' sake, and that it was not the dialogue of a real conference. According to Fabricius, Allatius also published in his work De Consensu (sc. De Ecclesioe Occidentalis et Orientalis perpetua Consensione), p. 1153, a work of John which is described as Epistola de Ritibus immutatis in Sacra Communione. Other works of John are extant in MS. See Allatius, Groec. Orthodox. 50, 100; Fabricius, Bibl. Gr. 11, 648, 650. — Smith, Dict. Gr. and Rom. Biog. 2, 601.