Looking for My Family History

im trying to reseach my family from new zealand in keao and whangarua end cause im a kingi my father name is tuaroha wiripoa kingi and my grandfather is wiripoa kingi but my family i have lost over the years knowing only my mother side i can only go back as my grandfather... i know some of my dads half sisters and brothers but i would like to know my kingi side and create a whakapapa for my childrens children before we lose that part of us as people ....if you could help me i,ll be very greatful to you!