No, the Waddy family originate in Northern Europe and it is probable that the US non-white connection is due to the name being adopted. My Grandfather traced his family right back to the early days of modern US history and those he identified as direct descendants he made contact with - they are white and originate from common anscestors. However, obviously in modern times there may well be, through marriage, some people who have a mixed race heritage. The name Waddy is quite unusual and in its current spelling has been traced back to the 11th Century in the UK. In close geographical proximity some variation in spelling may have occured e.g Wadie, Waddington.