St. Helena

We don't know if St. Helena was always a Christian, but if not, she did convert, and is credited with finding the cross on which Jesus was crucified, during her lengthy pilgrimage to Palestine in 327-8. During this trip Helena established Christian churches. Whether Helena encouraged Constantine to convert to Christianity or it was the other way round is not known for sure.

May 4, 328 may be the date of St. Helena's death. The Rogue Classicist lists May 3, 326 as the traditional date for the finding of the True Cross. The dates seem too close, especially since the saint's day isn't until August.

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