Hail Star of the Sea! The stanza quoted above comes from a medieval hymn addressed to Our Lady Star of the Sea.
No one knows who wrote the hymn, or who first said Ave Maris Stella [Hail Star of the Sea] as a prayer, but it was a favorite of the Irish monks who went as pilgrim missionaries all throughout Europe in the Middle Ages. One of our ancestors in the Faith hid the crucifix pictured in the center. It is two-sided, and on the reverse is Our Lady as Star of the Sea, with the words quoted above written around her. I’ve had copies made of the crucifix, and will carry them with me as I go to Knock this summer on pilgrimage to Ireland.