Māori mythology and Māori traditions are the two major categories into which the legends of the Māori of New Zealand may usefully be divided. The rituals, beliefs, and the world view of Māori society were ultimately based on an elaborate mythology that had been inherited from a Polynesian homeland and adapted and developed in the new setting (Biggs 1966:448).
Few records survive of the extensive body of Māori mythology and tradition from the early years of European contact. The missionaries had the best opportunity to get the information, but failed to do so at first, in part because their knowledge of the language was imperfect. Most of the missionaries who did master the language were unsympathetic to Māori beliefs, regarding them as 'puerile beliefs', or even 'works of the devil'. Exceptions to this general rule were J. F. Wohlers of the South Island,Richard Taylor, who worked in the Taranaki and Wanganui River areas, and William Colenso who lived at the Bay of Islands and also in Hawke's Bay. "The writings of these men are among our best sources for the legends of the areas in which they worked" (Biggs 1966:447).
In the 1840s Edward Shortland, Sir George Grey, and other non-missionaries began to collect the myths and traditions. At that time many Māori were literate in their own language and the material collected was, in general, written by Māori themselves in the same style as they spoke. The new medium seems to have had minimal effect on the style and content of the stories. Genealogies, songs, and narratives were written out in full, just as if they were being recited or sung. Many of these early manuscripts have been published, and as of 2012[update] scholars have access to a great body of material (more than for any other area of the Pacific) containing multiple versions of the great myth cycles known in the rest of Polynesia, as well as of the local traditions pertaining only to New Zealand. A great deal of the best material is found in two books, Nga Mahi a nga Tupuna (The Deeds of the Ancestors), collected by Sir George Grey and translated as Polynesian Mythology; and Ancient History of the Māori (six volumes), edited by John White (Biggs 1966:447).