Ireland lay on the edge of the world until Columbus proved otherwise in 1492. The mysterious Atlantic was explored by sailors such as Saint. Brendan (†577) and one of islands he came across on his voyages was Hy Brasil, the Irish Atlantis, which he referred to as The Promised Land.).
The Island of Hy Brasil by Rónán Gearóid Ó Domhnaill
It got its name from the Irish Uí, meaning descendant of Bresal, meaning beauty. Bresal was of the Fir Bolg and it was after one of his daughters, Galvia, that Galway got its name. It was suggested that the country of Brazil was named after the island, but it actually got its name after the red coloured Brazil wood. Other names for the island included Tir fo-Thuin (Land Under the Wave), Mag Mell (Land of Truth), Hy na-Beatha(Isle of Life), and Tir na-m-Buadha (Land of Virtue).
There is a description of the island the 9th century biography of Saint Brendan Navigatio Sancti Brendani which was a medieval bestseller. The island was described as being shrouded in mist, visible for one day only every seven years, circular in shape with a river running across its diameter. Though visible it could not always be reached.
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