Cyclopedia of Biblical, Theological and Ecclesiastical Literature
Zacharias, Bishop of Anagni
Italy, was sent in A.D. 860, as one of the legates of pope Nicholas I, to Constantinople with letters of reply to those of the emperor Michael and the patriarch Photius, making overtures to the Church of Rome for sympathy and cooperation. See Neander, Hist. of the Church, 3:562.
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McClintock, John. Strong, James. Entry for 'Zacharias, Bishop of Anagni'. Cyclopedia of Biblical, Theological and Ecclesiastical Literature. https://www.studylight.org/encyclopedias/eng/tce/z/zacharias-bishop-of-anagni.html. Harper & Brothers. New York. 1870.