Papa Kornelio alikuwa Papa kuanzia tarehe 6 au 13 Machi 251 hadi kifodini chake mwezi wa Juni 253. Alitokea Roma, Italia. Alimfuata Papa Fabian akafuatwa na Papa Lucius I. Alikabili dhuluma ya Dola la Roma lakini pia farakano la Novasyano kuhusu namna ya kuwatendea Wakristo waliowahi kukubali kutoa sadaka ya Kipagani ili wasiuawe. Kornelio alitaka kuwapokea tena baada ya matendo kadhaa ya toba, wakati Novasyano aliwakataa kabisa akawa antipapa. Tangu kale anaheshimiwa kama mtakatifu mfiadini na kutajwa katika Kanuni ya Kirumi. Sikukuu yake ni tarehe 16 Septemba. Watakatifu wa Agano la Kale Orodha ya Watakatifu Wakristo Orodha ya Watakatifu wa Afrika Orodha ya Watakatifu Wafransisko Mababu wa Kanisa Orodha ya Mapapa Collected works by Migne Patrologia Latina [1] https://www.vatican.va/content/vatican/en/holy-father.index.html#holy-father "Decius", Encyclopædia Britannica (Online School ed.), 7 December 2008 . Saints and Feast Days. New York: Loyola P, 1991. McBrien, Richard P (September 24, 2004), National Catholic Reporter 40 (41), General OneFile. Gale. Sacred Heart Preparatory (BAISL), p. 19(1), retrieved 5 December 2008, Pope Cornelius, a reconciler, had a hard road .