Saint Callistus I (Subscribe)
Links
St. Calixtus I
http://www.cfpeople.org/Books/Pope/POPEp16.htm
This pope is known mostly through the writings of his enemies.
St Calixtus, or Callistus, Pope, Martyr
http://www.ewtn.com/library/MARY/CALLIXTU.htm
From Butler's Lives of the Saints.
Pope Callistus I
http://www.newadvent.org/cathen/03183d.htm
Martyr, d. about 223. Also known as Callixtus or Calixtus.
Catholic Online: St. Callistus I
http://www.catholic.org/saints/saint.php?saint_id=31
Hagiography, by Terry Matz.
Callixtus I
http://www2.evansville.edu/ecoleweb/glossary/callixtusi.html
Short biography, by Karen Rae Keck. It was Callixtus who excommunicated Sabellius.
Calixtus I
http://encyclopedia.jrank.org/CAL_CAR/CALIXTUS_I.html
Biographical profile of the third-century pope, in the 1911 Encyclopędia Britannica.
A Saint a Day: St. Callistus I
http://www.holyspiritinteractive.net/kids/saints/1014_callistus.asp
The story of this pope, suited to children.