Brendan of Clonfert is one of the early Irish monastic saints and one of the Twelve Apostles of Ireland. He is also referred to as Brendan the Navigator, Brendan the Voyager, Brendan the Anchorite, and Brendan the Bold. The Irish form of his name is Naomh Bréanainn or Naomh Breandán. He is mainly known for his legendary voyage to find the "Isle of the Blessed" which is sometimes referred to as "Saint Brendan’s Island". The written narrative of his journey comes from the immram Navigatio Sancti Brendani Abbatis. 486 – 577; died at about 91. Alive at the same time as Justinian I, Aryabhata, Boethius, Gregory I, and Benedict of Nursia. Wiki link