Granville John Berney Duff (1869-1936) (1869–1936) Parents Mary Laura Dawkins James Duff Children Joseph Tiopira Duff Haukino Granville Duff Martin Rangiamohia Duff Siblings Lilian Selina Amy Duff Catherine Basilia Duff Bernard James Petre Mildred Duff Beatrice Duff Helen Duff Partners Lilian Mary Petrie Rangiamohia Te Herekiekie