http://www.telegraph.co.uk/news/main.jhtml?xml=/news/2007/01/24/nrace24.xml

From the page:
“White men with an unusual Yorkshire surname have black African roots, according to a study that shows Britain’s multiracial society dates back hundreds of years earlier than most people realise.

It underlines how the concept of race has no scientific meaning by revealing that a white “Caucasian” man in Leicester has a significant African genetic ancestry, along with a lot of other men with the same rare surname.”