I was wondering if we can Venerate St. Constantine like St. Joan of Arc? I have always been a little wary of him for some reason.
St Constantine is a pre-schism saint and is publicly venerated in the liturgy of the Byzantine Catholic Rite. He is more popular in the Byzantine East than the West.
But since he is pre-schism, I’m assuming that means he can still be venerated by Westerners, like his mother St. Helena.
Yes. See: catholic.org/saints/saint.php?saint_id=2731 However, I do not think that he is included in the Roman Calendar for feast days.