David "Darby" Riordan was an Australia

Australia

Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

n politician. He was the Australian Labor Party

Australian Labor Party

The Australian Labor Party is an Australian political party. It has been the governing party of the Commonwealth of Australia since the 2007 federal election. Julia Gillard is the party's federal parliamentary leader and Prime Minister of Australia...

 member for the House of Representatives

Australian House of Representatives

The House of Representatives is one of the two houses of the Parliament of Australia; it is the lower house; the upper house is the Senate. Members of Parliament serve for terms of approximately three years....

 seat of Kennedy

Division of Kennedy

The Division of Kennedy is an Australian Electoral Division in Queensland. The division was one of the original 75 divisions contested at the first federal election. The division is notable for its size, relative to other electoral divisions...

 from his defeat of Grosvenor Francis

Grosvenor Francis

Grosvenor Arundell Francis was an Australian politician. He was the Nationalist Party member for the House of Representatives seat of Kennedy from the 1925 election until his defeat by Darby Riordan at the 1929 election....

 at the 1929 election

Australian federal election, 1929

Federal elections were held in Australia on 12 October 1929. All 75 seats in the House of Representatives were up for election, with no Senate seats up for election, as a result of Billy Hughes and other rebel backbenchers crossing the floor over industrial relations legislation, depriving the...

 until his death. He was succeeded by his nephew, Bill Riordan

Bill Riordan

William James Frederick "Bill" Riordan CBE was an Australian politician and Minister for the Navy.Riordan was born in Chillagoe, Queensland, son of William James Riordan and nephew of Darby Riordan and Ernest Riordan William James Frederick "Bill" Riordan CBE (8 February 1908 – 15 January 1973)...

. He had two brothers who were also politicians: William James Riordan (a member of the Queensland Legislative Council

Queensland Legislative Council

The Queensland Legislative Council was the upper house of the parliament in the Australian state of Queensland. It was a fully nominated body which first took office on 1 May 1860. It was abolished by the Constitution Amendment Act 1921, which took effect on 23 March 1922.Consequently, the...

 from 1917 to 1923) and Ernest Riordan (a member of the Queensland Legislative Assembly

Queensland Legislative Assembly

The Queensland Legislative Assembly is the unicameral chamber of the Parliament of Queensland. Elections are held approximately once every three years. Voting is by the Optional Preferential Voting form of the Alternative Vote system...

from 1936).