Trevor Bentley holds a PhD in history from the University of Waikato and has a special interest in researching, writing and teaching about the interaction of Māori and Pākehā in pre-Treaty New Zealand. His primary focus are the Pākehā who entered Māori tribal societies voluntarily and as captives. Transgressing Tikanga is Bentley’s fifth book to explore this subject. A full-time researcher and writer, he lives in Tauranga with his wife, Helen.