Saint Brendan, navigator and discoverer

Hello all,

I'm seeking detailed information concerning Saint Brendan the Navigator, an Irish abbot who lived in the Dark Ages. He is supposed to have made two sea voyages for the purpose of exploration, arriving far beyond his native Eire and discovering hitherto unknown lands.

Could part or all of the legend of Saint Brendan be factual?


I didn't find the right solution from the Internet.

References:
http://historum.com/medieval-byzantine-h...discoverer.html

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