The Moriori were Maori who settled the Chatham Islands, an isolated group of Islands East of the South Island but part of New Zealand.
because it is part of the maori culture and they are important to new zealand and they are well known to new zealanders. they are very very well known just like god so there you are....
The name Moriori is given and belongs to the first peoples of the Chatham Islands, (Moriori: Rekohu, Māori: Wharekauri). These peoples descend from early Maori settlers in Aotearoa. Early mistaken scholarship produced the 'Moriori Myth'.
The Moriori people were an indigenous community in Chatham Islands, New Zealand. They faced conflict and were eventually conquered by Maori tribes in the 1830s. This led to the decimation of their population and loss of their traditional way of life.