Denis Joseph Doherty (1861 – 23 October 1935) was an Irish-Australian businessman, pastoralist and politician who served as a member of the Legislative Assembly of Western Australia from 1897 to 1903, representing the seat of North Fremantle.

In 1886, he moved to Wyndham, a small town in Western Australia's Kimberley region, with a schoolmate from Ireland, Francis Connor.

In 1917 he received a Military Medal for ‘coolness and particular devotion to duty when in charge of [a] Lorry’ during an enemy attack.

On 23 June 1924, he married Dorothea Haynes; the couple had a son, Gordon Doherty, who was possibly adopted.

Dorothea Haynes was six years his senior, born on 12 February 1887; she was a government school teacher in Western Australia between 1907 and 1942; however, she did not teach between 1924 and 1934.

), also known as ‘Katch’, was educated abroad attending schools in England and Germany; she was said to have developed a ‘talent for drawing’.

Auvergne was among the first of nine women Called to the Bar in England in 1922, following the enactment of the Sex Disqualification (Removal) Act 1919.

When her father died in 1935, Auvergne took over his cattle business with Mr Michael Durack, in the Northern Territory.