Alexander I, Eventius, & Theodulus
- Undoubtedly martyrs, but this article suggests that calling Alexander "Pope" is erroneous.
- http://www.saintpatrickdc.org/ss/0503.htm#alex

Alexander I
- Short essay, by Karen Rae Keck.
- http://www2.evansville.edu/ecoleweb/glossary/alexi.html

St. Alexander I
- Brief essay, from "Popes Through the Ages."
- http://www.cfpeople.org/Books/Pope/POPEp6.htm

Pope St. Alexander I
- Article on this pope, who died in 115 or 116. According to a tradition dating to the fifth century, Alexander was martyred, but it is possible that he has been confused with another St. Alexander who was indeed a martyr. From the Catholic Encyclopedia.
- http://www.newadvent.org/cathen/01285c.htm