Nicephorus, Monachus an Eastern ascetic noted as an ecclesiastical writer, but little known, however, except as an author, flourished about 1100, according to P. Possinus. One Nicephorus, a monk, is the author of Περὶ φυλακῆς καρδίας, De Custodia Cordis, a very interesting and valuable essay, which Possinus published in Greek and Latin, in his Thesaurus Asceticus (Paris, 1648, 4to). See Cave, Hist. Lit. ad ann. 1101; Fabricius, Bibl. Grec. 7:679.