Marcellinus, Pope
- Short hagiography.
- http://www.saintpatrickdc.org/ss/0426.htm#marc

The Ecole Glossary: Marcellinus
- Brief biography of Pope Marcellinus, by Karen Rae Keck.
- http://www2.evansville.edu/ecoleweb/glossary/marcellinus.html

St. Marcellinus
- Short biography, from the book "Popes Through the Ages," by Joseph Brusher.
- http://www.cfpeople.org/Books/Pope/POPEp29.htm

Patron Saints Index: Marcellinus
- Profile of Pope St. Marcellinus.
- http://www.catholic-forum.com/saints/saintm92.htm

Pope Saint Marcellinus
- Elected to the papacy in 296. He died in 304, probably of natural causes, since no early source calls him a martyr. Article in the Catholic Encyclopedia.
- http://www.newadvent.org/cathen/09637d.htm