"He won five gold, three silver and two bronze medals at nationals.
"They were for blow darts, 50m and 100m track sprints, the 100m swim and indoor bowls."
Mrs Tuua told the Herald her brother was selected to trial for the national squad at the 1988 Seoul Paralympics.
"He was selected for the qualifying squad for the Seoul Olympics. But, he missed out in the narrower squad which went."
Mrs Tuua said her brother never let his disabilities limit the way he lived his life.
"I think the most unique thing about him was that he was a 40-year-old man who was born with no arms and one short leg, and probably lived life more to the fullest than most of us able-bodied people did.
"Because he came from a family of six, there was never any special treatment. So, by the age of about 3, he was walking - which was quite difficult for him because he had one short leg which was quite twisted."
Mr Nathan's family and friends are commemorating his life this week. He was returned to New Zealand from Perth at the beginning of the week, and is lying in state at Otamatea Marae.