What nationality does the person with a notable victory over "The Chief" have?
Peter Graham (fighter) Peter "The Chief" Graham (born 5 August 1975) is an Australian kickboxer, boxer and mixed martial artist.
Joana Rokomatu Adi Joana Rokomatu is a Fijian chief who holds the title of "Tui Sigatoka", or Paramount Chief of Sigatoka.