I'm totally stumped, and I've tried to think of that, too, who colonized Puerto Rico? I think that might be where my daughter's 7% unknown comes from, maybe indigenous people? But Puerto Rico was colonized by Spanish (the names are Rivero, Aviles, Rodgriguez, etc.
Spanish would be European, southern European. It's as though my daughter got little or no DNA from her father! Or maybe the Scandinavian is his mother's Germanic ancestry? Either way, it makes me think the "Scandinavian" ancestry is somehow derived inaccurately, by Ancestry. Something seems amiss.
I've tried reporting this to ancestry through the Beta Feedback. Anyone know how to do this directly?