David Unaipon (28 September 18727 February 1967) was an Australian Aboriginal

Australian Aborigines

Australian Aborigines , also called Aboriginal Australians, from the latin ab originem , are people who are indigenous to most of the Australian continentthat is, to mainland Australia and the island of Tasmania...

 of the Ngarrindjeri

Ngarrindjeri

The Ngarrindjeri are a nation of eighteen "tribes" consisting of numerous family clans who speak similar dialects of the Ngarrindjeri language and are the traditional Aboriginal people of the lower Murray River, western Fleurieu Peninsula, and the Coorong of southern, central...

 people, a preacher

Preacher

Preacher is a term for someone who preaches sermons or gives homilies. A preacher is distinct from a theologian by focusing on the communication rather than the development of doctrine. Others see preaching and theology as being intertwined...

, inventor and writer. He was the most widely known Aboriginal in Australia, and broke stereotypes of Aboriginals. Unaipon is featured on the Australian $50 note in commemoration.
Born at Raukkan, South Australia (Point McLeay) Mission

Mission (station)

A religious mission or mission station is a location for missionary work.While primarily a Christian term, the concept of the religious "mission" is also used prominently by the Church of Scientology and their Scientology Missions International....

 on the banks of Lake Alexandrina in the Coorong region of South Australia

South Australia

South Australia is a state of Australia in the southern central part of the country. It covers some of the most arid parts of the continent; with a total land area of , it is the fourth largest of Australia's six states and two territories.South Australia shares borders with all of the mainland...

, Unaipon was the fourth of nine children of James

James Unaipon

James Unaipon was an Australian Indigenous preacher of the Warrawaldie Lakalinyeri of the Ngarrindjeri....

 and Nymbulda Ngunaitponi.