New Zealand. Special Committee on Moral Delinquency in Children and Adolescents

Born in Prahran, Australia, in 1890, he moved to New Zealand as an infant and was educated at Otago Boys' High School, the University of Otago, and Victoria College. He built a successful legal career in Wellington, was admitted to the bar in 1914, and later became King's Counsel.

Alongside his legal work, he was active in public life. He stood for Parliament twice, was appointed to New Zealand’s Legislative Council in 1950, and received a CBE in 1953 for charitable and public services, especially in law.

He is most widely remembered as the chair of the Special Committee on Moral Delinquency in Children and Adolescents, whose 1954 report became widely known as the Mazengarb Report. That document became a lasting reference point in New Zealand social history, linking his name with one of the country’s most talked-about official reports on youth culture and morality.