Descendants of Newfoundland’s “extinct” Beothuk Live on in Iceland (2011)
blogs.canoe.com
blogs.canoe.com
But the Greenland colony was inhabited by a few thousand people and lasted a few hundred years. Further more, the events around it are recorded in sagas that have survived to this day. Likewise the impact on the presumably hundreds of lives that we involved in the North American landings.
Anything that affects thousands of lives for hundreds of years is a big deal.
Catholic historian mentioning Vinland:
https://www.britannica.com/biography/Adam-of-Bremen#ref19170...
There is some evidence Columbus visited Iceland in 1477 where there would have been more knowledge of the North American territories.
Saint Brendan’s Isle would have been on many maps in Columbus's time, with Irish legends about it. Some of the other phantom islands from that era include Hy-Brasil, the Isle of Mam, Royllo, Satanazes, and Antillia.
While there may have been some influence from the Norse sagas, I think Antillia played a much larger role in his decision making. Quoting https://en.wikipedia.org/wiki/Antillia#Medieval_beliefs_and_... :
> under the Spanish flag of Ferdinand and Isabella, Christopher Columbus set out on his historic journey to Asia, citing the island as the perfect halfway house by the authority of Paul Toscanelli.[45] Columbus had supposedly gained charts and descriptions from a Spanish navigator, who had "sojourned... and died also" at Columbus's home in Madeira, after having made landfall on Antillia.[46]
I am not saying that there could not have been influence from the Norse sagas, only that other (incorrect) geographical descriptions appear to have had a stronger and more documented influence on his decision.
https://books.google.ca/books?id=SaXuAgAAQBAJ&pg=PR8&lpg=PR8...
and Christopher Columbus, as a literate Catholic, could conveivably have had access to this knowledge. The Catholic Church may very well have had an interest in these lands as potential places to spread its faith to. The Church even had a bishop in the Norse colonies in Finland.
But yes, clearly the legends you mention were much more prominent in the public consciousness of the time.
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