The late Green Party MP Fa'anānā Efeso Collins has been remembered by his widow as an "extraordinary man" at a service in South Auckland.

The 49-year-old husband and father-of-two died on 21 February after collapsing during a charity event in Auckland's central city.

Fa'anānā's unexpected death came as a shock to many, with his aiga - including wife Fia and daughters Kaperiela and Asalemo - saying he was "the anchor of our tight-knit family".

Politicians and members of the public, including school students, were among those attending Fa'anānā's funeral at Due Drop Event Centre in Manukau on Thursday afternoon (NZ time).

Many of the guests were dressed in traditional Pacific clothing, and a gospel choir sang as the crowd filled the room.

To start the service, poet Karlo Mila read a poem that finished: "You become the ancestor we always knew you were."

Family spokesman Taito Eddie Tuiavii then gave a formal greeting in Samoan, paying tribute to Fa'anānā and his villages.

He described Fa'anānā as "larger than life".

It was an "indescribable feeling" to mourn the loss of "our champion", Tuiavii said.

Fa'anānā's sisters took the stage to share stories from his life.

As a child, Fa'anānā was known as 'Boppa', his sister Jemima said. He loved playing and watching cricket.

"We didn't have much growing up in Ōtara, but we were raised with an abundance of love, and that made us pretty rich."

Fa'anānā preferred watching the TV news to children's programmes and loved trivia.

He attended Auckland Grammar School for just two weeks, before deciding to leave due to "racist comments", his sister said. He then transferred to "the mighty" Tangaroa College before going on to Auckland University.

Fa'anānā always had "a deep friendship with Jesus", the crowd heard.

"Efeso was able to reach so many people because of his relationship with Jesus."

Jemima signed off by saying: "Manuia lau malaga (rest in peace), Boppa. Until we meet in the clouds."

Another of Fa'anānā's sisters, Millie Collins, described her brother as "our family's golden boy".

"He was my mum and dad's sunshine, and to his brothers and sisters, his cousins and friends, he was our superstar."

He was always helping out his extended family, Millie Collins said.

"[He was] born to impact the world, born to lead through service. A visionary, a loving, honorable son, husband, father, brother, cousin, nephew and friend."

Among the people at the funeral were Green Party co-leaders Marama Davidson and James Shaw, Prime Minister Christopher Luxon, Labour leader Chris Hipkins, and National's Gerry Brownlee, Auckland Mayor Wayne Brown, Te Pāti Māori co-leaders Debbie Ngarewa-Packer and Rawiri Waititi.

Fa'anānā's wife and daughters were wearing the dresses they wore at Parliament earlier this month, when Fa'anānā gave his maiden speech as an MP.

Davidson addressed Fia directly in her speech, saying Fa'anānā valued her opinion above all else.

"He lived for the power of Pacific women."

Family was his "constant bullseye", Davidson said.

She promised the Green Party would wrap their arms around their colleague's family for their whole lives. All 15 Green MPs were at the funeral.

The party would also continue his legacy of fighting for the self-determination and wellbeing of Pasifika people, Davidson said.

- RNZ