Catholic Encyclopedia
St. Helena, the mother of Constantine the Great, d. about 330.
Catholic Online
Biography of St. Helena accepts the theory that she was born in England.
Christ in His Church
The traditional story of how St. Helena discovered the true Cross of Christ.
James Kiefer's Christian Biographies
St. Helena, empress and widow. Includes prayer in traditional and contemporary language.
Lives of Saints
St. Helena, widow. From the book "Lives of Saints", published by John J. Crawley.
Patron Saints Index
Profile of St. Helena. Illustrated, with links.
The Ecole Glossary
Short biography of St. Helena, by Karen Rae Keck.