Interesting story in today's news about DNA tests on Richard III. Scientists compared Richard's yDNA with the yDNA of the Somerset family. No match.
The yDNA should have been the same because paper records show both families are descended in the male line from Edward III. Richard is descended from the Yorkist branch and the Somersets are descended from the Lancastrian branch.
The tests give us new info about the Plantagenet DNA. Richard III belonged to haplogroup G-P287, while the Somersets belong to haplogroup R1b-U152. One of these is probably the real Plantagenet DNA, but we don't know which.
The media speculation is centering around the idea that John of Gaunt might not have been a biological son of Edward, but apparently only because that would create the most drama. Another possibility is that the NPE is somewhere in the Somerset line because so many of them were gay.
Read more here:
http://www.telegraph.co.uk/news/uknews/theroyalfamily/11268218/Rich...
http://www.bbc.com/news/science-environment-30281333
http://www.nature.com/ncomms/2014/141202/ncomms6631/full/ncomms6631...