Claim: In the list of New Zealand rugby union teams (which does not include women's teams, local club or school teams, inactive teams, or non-geographic representative teams), Thames Valley and Waikato were the two teams from the North Island unions which were both formed in 1921.
Evidence: The list does not include women's teams, local club or school teams, inactive teams, such as the North and South Island teams, or non-geographic representative teams, such as the New Zealand Universities, Marist, or Barbarians sides. Thames Valley 1921 Waikato 1921