Māori Purposes Fund Board, Chair New Zealand Polynesian Festival, National Committee Member
Sir Duncan had an illustrious political career as a National Party Member of Parliament under the Muldoon and Holyoake Governments. He served as Deputy Prime Minister from 1981 to 1984 and was Minister of Māori Affairs from 1969 to 1972 and again from 1975 to 1978. He was a staunch advocate for the advancement of Māori aspirations in arts, culture and language.
He had a great affinity for Māori. Being of Scottish descent, he felt he had a lot in common with Māori. During his time as Minister of Māori Affairs he also held office as Chair of the Māori Purposes Fund Board. In 1970 this board approved a grant of $5,000 to host the inaugural New Zealand Polynesian Festival in 1972.
Sir Duncan was the Minister of Māori Affairs during the first festival in 1972. At that time, there was a resurgence and revival of Māori language traditions, especially among rangatahi.
The trophy awarded to the overall winner of the national kapa haka competition was donated by Sir Duncan. It is the Ngāpō Pīmia Wehi Duncan MacIntyre trophy. The taonga was donated to promote the pursuit of excellence by rangatahi in Te Reo Māori and its traditions.