Saint Sergius I (Subscribe)
Links
The Ecole Glossary
http://www2.evansville.edu/ecoleweb/glossary/sergiusi.html
Began the practice of singing the Agnus Dei during the Mass, and instituted the feast of the exaltation of the Cross.
Popes Through the Ages
http://www.cfpeople.org/Books/Pope/POPEp84.htm
Account of the pontificate of St. Sergius, from the book by Joseph Brusher.