Saints Constantine and Helen, the Equals to the Apostles

On the twenty-first of May we commemorate the holy, glorious, God-crowned and great sovereigns Constantine and Helen, the Equals to the Apostles.
Constantine the Great and Historical Truth

Below is an excellent article by Fr. George Metallinos that portrays the truth about Constantine the Great and shows with conviction why the Orthodox Church honors him as a Saint and “Equal of the Apostles”. It also answers the numerous critics of Constantine, among whom accuse him as being one of the most evil men in history.
Why Do We Venerate Constantine the Great as a Saint?
The very name of Constantine is enough to move the heart of any Christian. It moves us because the first to bear the name Constantine I, the Great, was not merely one of the greatest men in world history, but he was something more besides: a saint.
Saint Constantine the Great and Saint Helen, the Equal to the Apostles

The Church calls St Constantine (306-337) “the Equal of the Apostles,” and historians call him “the Great.” He was the son o the Caesar Constantius Chlorus (305-306), who governed the lands of Gaul and Britain. His mother was St Helen, a Christian of humble birth.