The ancient Greeks sailed all around the Mediterranean. One wonders why they didn't at least attempt to sail across the Atlantic.
It is in a book.
I imagine a lot of the ancient Europeans, Asians and North Africans made it to the Americas.
Probably did not make it back tho.
There is a group of people in Appalachia called Melungians. I once saw a photo of one taken around 1910. I immediately thought, “Portuguese”.
Was surprised to read later that many of them very early called themselves Portuguese. They probably predated Columbus.
They may have but failed.