FILE - In this June 22, 1939 file photo, participants in a "Gorsedd," a group of poets and bards, announce the upcoming 1940 Welsh Eisteddfod cultural festival at Bridgend, Glamorganshire, Wales, at an ancient druid stone circle near the River Ogwar. In report released Thursday, March 19, 2015 in the journal Nature, genetic samples collected from across the United Kingdom are shedding light on the ancient past, including Viking invasions and a mystery about the arrival of the Anglo-Saxons. The DNA also suggests that, genetically speaking, people in Wales are the closest matches to early settlers of Britain after the last ice age, people who began showing up some 10,000 to 11,000 years ago. (AP Photo)