Helena, mother of the first Christian emperor, Constantine I, traveled to the Holy Land where some believe she discovered the cross on which Jesus was crucified.

It is possible that Helena was born Christian, but it is thought that she converted. Details about her early life and even her death are scanty. Helena (Flavia Iulia Helena) was born in about 250 and died when she was about 80, according to Eusebius, sometimes called the father of Church history. Helena is thought to have come from Drepanum, in the Roman province of Bithynia [see map] because of the honor her son paid to the area.

In the Eastern Orthodox Church, St. Helena's saint's day is May 21. In the Roman Catholic Church, it's August 18.

Read more about St. Helena.