What this information also reinforces is that there really weren't indigenous people here, they all got here by migrating here.  It's really a matter of who migrated here first.  And that information shows it might have been people from Europe.  That said, I've never really understood Columbus Day and the reason to celebrate him.  However it would be a real shame if they replaced it with indigenous people day.  The real reason behind calling it indigenous people day is to actually celebrate American Indians and to give them a day where we should feel sorry for coming over here.  If Europeans had not come here, would America be as developed as say Africa?  Would it be carved up into a bunch of countries, run by various tribes?