Nancy Davidson dies after battle with cancer By FOX6 News Digital Team Published Nancy Davidson dies after cancer fight Nancy Davidson, known by many as the ''first lady of motorcycling,'' has died after a long-term battle with cancer. MILWAUKEE - Nancy Davidson, known by many as the "first lady of motorcycling," has died after a long-term battle with cancer. She was 89 years old. Nancy was a Milwaukee native. She has always been by the side of her husband, Willie G. Davidson, the grandson of one of the four founding fathers of Harley-Davidson Motor Company. The picture shared above was from 2013 – when the motorcycle maker was celebrating its 110th anniversary.