I have a cousin that I never met in Dallas. He is way into genealogy. He payed Family Tree to test my spit. My mother had told me, "We are Irish, Dutch and Indian." She ticked off three tribes of Native Americans. Turned out, I am 100% European. A series of dots on a map makes a sort of circle around Ireland, covering France and Sweden, among others. The heaviest concentration of the dots is over Ireland.
They keep refining the map of my origins, now making concentrations of color instead of using dots. Interestingly, Ireland is not as prominent, now. Three largest cities in my darkest circle are Glasgow, Edinburgh and Manchester.