Background
Nunn was born during the Great Depression in Maryborough, the son of Robert Nunn whose ancestors arrived in Maryborough on the ship David McIvor, and his mother Eileen Marie Murphy who was descended from Irish settlers.
Nunn was born during the Great Depression in Maryborough, the son of Robert Nunn whose ancestors arrived in Maryborough on the ship David McIvor, and his mother Eileen Marie Murphy who was descended from Irish settlers.
He worked as a business manager before serving as a Hervey Bay Councillor from 1987 to 1990. In 1989, Nunn moved to state politics and was elected to the Queensland Legislative Assembly as the Labor member for Isis. After Isis was abolished before the 1992 election Nunn transferred to the new seat of Hervey Bay.
Nunn served as a backbencher until his defeat in 1998 by One Nation candidate, David Dalgleish.