Catholic Encyclopedia
Pope St. Cornelius, had to contend with the antipope Novatian. When persecution broke out, Cornelius was exiled, and he died a martyr in 253.
Catholic Online
Biographical portrait of Pope St. Cornelius.
Patron Saints Index
Profile of Pope St. Cornelius. With links.
Popes Through the Ages
Account of the pontificate of St. Cornelius.
The Ecole Glossary
Short biography of Pope St. Cornelius, by Karen Rae Keck.