Our biggest drawback is ourselves with limited thought of where to look and what to look for.

Learning the history of the region can truly help before you dig to deep and in the wrong neighborhood.

Keep digging, keep looking, inside and outside of the norm.

There was an article in The Guardian [U.K.] back in March 2015 about the genetic makeup of the British Isles.  Seehttp://www.theguardian.com/science/2015/mar/18/genetic-study-30-percent-white-british-dna-german-ancestry.  

The Guardian article was from a Nature magazine article - you can read the article at http://www.nature.com/nature/journal/v519/n7543/full/nature14230.html but cannot print or save it.