Lester Castle was the Chief Ombudsman

New Zealand Chief Ombudsman

New Zealand's Chief Ombudsman is appointed by the Governor-General of New Zealand on recommendation of the House of Representatives to oversee investigation of complaints against government departments, and report, with recommendations, to Parliament.The post of Ombudsman was established in New...

 of New Zealand

New Zealand

New Zealand is an island country in the south-western Pacific Ocean comprising two main landmasses and numerous smaller islands. The country is situated some east of Australia across the Tasman Sea, and roughly south of the Pacific island nations of New Caledonia, Fiji, and Tonga...

 from 1984 to 1986. In this role, he was responsible for investigating complaints against central and local government agencies, including Ministers of the Crown.

Lester Castle was the son of Sydney Castle, also a lawyer.
He became a Wellington solicitor, Council member and President of both Wellington Law Society and the New Zealand Law Society

New Zealand Law Society

The New Zealand Law Society is the parent body for barristers and solicitors in New Zealand. It was established in 1869, and regulates all lawyers practising in New Zealand...

.
He was appointed an ombudsman in 1977, and Chief Ombudsman in 1984, holding this position until his death in 1986.