Nazari na Chelsi (walifariki labda Milano, Italia, 304 hivi) walikuwa Wakristo waliofia imani yao wakati wa dhuluma ya Dola la Roma. Ambrosi aligundua masalia yao mwaka 395, lakini habari nyingi juu yao hazina msingi katika historia. Tangu kale wanaheshimiwa na Wakatoliki, Waorthodoksi na wengineo kama watakatifu wafiadini. Sikukuu yao huadhimishwa tarehe 28 Julai. Watakatifu wa Agano la Kale Orodha ya Watakatifu Wakristo Orodha ya Watakatifu wa Afrika Orodha ya Watakatifu Wafransisko Catholic Encyclopedia (1913), "Sts. Nazarius and Celsus" Retrieved 2012-03-04. http://www.santiebeati.it/dettaglio/64650 Saint Gregory (Bishop of Tours) (1988). in Raymond Van Dam, tr.: Glory of the Martyrs. Liverpool: Liverpool University Press, 69–70. ISBN 978-0-85323-236-0.  Martyrologium Romanum (1900) Bibliotheca hagiographica latina antiquae et mediae aetatis Volume II (K-Z) (in Latin). Bruxelles: Société de Bollandistes, 881–882.  Jacobus (de Voragine, abp. of Genoa.) (1801). in Graesse, Th.: Jacobi a Voragine Legenda aurea, vulgo Historia Lombardica dicta Second (in Latin). Leipzig: Arnold, 439–442.  Jacobus de Voragine (2012).