Pray with a Saint Brendan rosary and call on his intercession. Saint Brendan was an Irish monk, abbot, sailor, ship-builder, and explorer who was one of the Twelve Apostles of Ireland. He is the most popular Irish saint after St. Patrick. He is known for his legendary quest to find the “Isle of the Blessed.” He is the patron saint of boatmen, divers, mariners, and travelers. His feast day is may 16th.