Catholic Encyclopedia - Pope St. Urban I, d. 230. We know very little about his life, and even his burial place was in doubt for some time. www.newadvent.org/cathen/15209a.htm
Catholic Online - The longer of two biographies of Pope St. Urban I at catholic.org. saints.catholic.org/saints/urban.html
For All the Saints - Brief hagiography of Pope St. Urban I. users.erols.com/saintpat/ss/0525.htm#urba
Popes Through the Ages - Brief biography of Pope St. Urban I, from the book by Joseph Brusher. www.cfpeople.org/Books/Pope/POPEp17.htm
The Ecole Glossary - Very short entry, by Karen Rae Keck. cedar.evansville.edu/~ecoleweb/glossary/urbani.html
