Via Geniaus, an article from The Australian titled "Name shame causes Cock shrinkage but Wang is on the rise." The Times of London chose a less shameful headline.
Cock, Daft, Death, Smellie, not to mention Gotobed, Shufflebottom and Jelly: they are all surnames that would have caused their owners considerable embarrassment over the years. A new analysis of British surnames reveals how names with rude overtones have seen the sharpest decline over the past 120 years as their owners have changed them to something more innocuous. [Link]