[Bilge_Rat]

The BBC being the "official" government propaganda site takes a more neutral stand. I smell a cover up.

The instance of female infidelity, or cuckolding, could have occurred anywhere in the numerous generations that separate Richard III from the 5th Duke of Beaufort (1744-1803), whose living descendants provided samples of male-line DNA to be compared against that of the Plantagenet king.

Richard III and his royal rival, Henry Tudor (later Henry VII), were both descendants of King Edward III. The infidelity could, in theory, have occurred either on the branch leading back from Henry to Edward or on the branch leading from Richard to Edward.

Henry's ancestor John of Gaunt was plagued by rumours of illegitimacy throughout his life, apparently prompted by the absence of Edward III at his birth. He was reportedly enraged by gossip suggesting he was the son of a Flemish butcher.

"Hypothetically speaking, if John of Gaunt wasn't Edward III's son, it would have meant that (his son) Henry IV had no legitimate claim to the throne, nor Henry V, nor Henry VI," said Dr Schurer.

The breakage was statistically more likely to have occurred in the part of the family tree which does not affect Royal succession - the most recent stretch - simply because more links in the chain exist there.

http://www.bbc.com/news/science-environment-30281333