"Sometime during the 1470's a group of Native Americans followed the Gulf Stream from the Americas to Ireland. We don't know if they were from the Caribbean region or from North America. We don't know if their journey was intentional or if they were driven eastward by a storm. What we do know is that two or more Americans, at least a man and a woman, reached Galway Bay, Ireland, and were there seen by Christoforo Colomb (Columbus) long prior to his famous voyage of 1492.
This momentous event, largely ignored by white historians, marks a beginning of the modern age, since it is precisely because of this experience that Columbus possessed the absolute certainty that he could sail westward to Cathay (Katayo or China) and India."
Oh hell, you can read the book here: