George Campbell, 8th Duke of Argyll, chief of Clan Campbell, bred a breed of white Scottish terriers known as the "Roseneath Terrier". Another breed of white Scottish terriers also appeared at this point, with Dr. Americ Edwin Flaxman from Fife developing his line of "Pittenweem Terriers" out of a female Scottish Terrier which produced white offspring. The dog seemed to produce these white puppies regardless of the sire to which she was bred, and after drowning over 20 of these offspring, he came upon the theory that it was an ancient trait of the Scottish Terrier that was trying to reappear. He rededicated his breeding program to produce white Scottish Terriers with the aim of restoring it to the same stature as the dark-coloured breed. Flaxman is credited with classes being added to dog shows for white Scottish Terriers towards the end of the 19th century.