Keladioni wa Aleksandria (alifariki 16 Julai 166) kuanzia mwaka 152 hadi kifo chake alikuwa Patriarki wa 9 wa Aleksandria (Misri). Tangu kale anaheshimiwa kama mtakatifu. Watakatifu wa Agano la Kale Orodha ya Watakatifu Wakristo Orodha ya Watakatifu wa Afrika Orodha ya Watakatifu Wafransisko https://dacb.org/stories/egypt/celadion/ Meinardus, Otto F.A. (2002). Two Thousand Years of Coptic Christianity. American University in Cairo Press. ISBN 978-977-424-757-6.  Atiya, Aziz S. The Coptic Encyclopedia. New York: Macmillan Publishing Co., 1991. ISBN 0-02-897025-XScript error: No such module "check isxn". The Official website of the Coptic Orthodox Pope of Alexandria and Patriarch of All Africa on the Holy See of Saint Mark the Apostle Archived 9 Machi 2018 at the Wayback Machine. Coptic Documents in French