minermark on Family Tree Circles

Growing up a blevins and hearing storys all our lives of how we were german,dutch,amish and an indian in there somewhere.
Then my cousin paid for a DNA full test.(big bucks).
Turns out i am 100% Payne!
Talk about a shocker,blew everyone in the family away.
So the big question these days is just exactly what the hell is going on here?
How/when did this take place? and why?
Do not have a clue where one would start ,if i started out as a payne aprox four/five generations ago,where did blevins come from???

Anyone having any input would be great.