Catholic Encyclopedia
Pope St. Eugene I, made bishop of Rome after Pope St. Martin I had been in exile for 14 months. Eugene died in 657.
Catholic Online
Biographical paragraph on Pope St. Eugene I.
For All the Saints
Short biography of Pope St. Eugene I.
Popes Through the Ages
Biography of Pope St. Eugene I, from the book by Joseph Brusher.
The Ecole Glossary
Brief biography of Pope St. Eugene I, by Karen Rae Keck.