Origins of the Celtic Cross…. Saint Patrick was a Christian missionary and is regarded as the patron saint of Ireland. St. Patrick lived from AD 373-493, and ministered in northern Ireland from AD 433 until his death. Pious legend credits Patrick with banishing snakes from the island, though post-glacial Ireland never actually had snakes. It is suggested that the snakes referred to the serpent symbolism of the Druids. Saint Patrick is also credited with teaching the Irish about the Holy Trinity by showing people the shamrock, a 3-leaved clover. Legend also says St. Patrick, while preaching Christianity drew a cross through a Celtic circle symbolic of the moon Goddess. Hence the Celtic cross was born. Today the circle of the cross is viewed as a of God’s endless love.