Proteri (alifariki 28 Machi 457) alikuwa Patriarki wa Aleksandria tangu mwaka 451 hadi alipouawa na Wakristo waliokataa maamuzi ya Mtaguso wa Kalsedonia. Anaheshimiwa na Wakatoliki na Waorthodoksi kati ya watakatifu wafiadini. Sikukuu yake huadhimishwa tarehe ya kifodini chake au tarehe 28 Februari. Watakatifu wa Agano la Kale Orodha ya Watakatifu Wakristo Orodha ya Watakatifu wa Afrika Orodha ya Watakatifu Wafransisko Evagrius Scholasticus, Ecclesiastical History (AD431-594), translated by E. Walford (1846). Book 2, chapter 5 Pearse, Roger. Zachariah of Mitylene, Syriac Chronicle (1899).  Book 4.. https://catholicsaints.info/saint-proterius-of-alexandria/ Martyrologium Romanum Meyendorff, John (1989). Imperial unity and Christian divisions: The Church 450-680 A.D., The Church in history 2. Crestwood, NY: St. Vladimir's Seminary Press.  Proterius (451–457). Official web site of the Greek Orthodox Patriarchate of Alexandria and All Africa. Iliwekwa mnamo 2011-02-07. St Proterius of Alexandria Orthodox Synaxarion