His father emigrated to South Australia in 1838, perhaps on the same boat as his friend Thomas Hogarth.

[2] They had 12 children, including: Warren's sister Jane married William Bakewell on 20 April 1844.

Warren took an active interest in the development of the Northern Territory, and as early as 1862 was largely interested in a sheep station on the route of the transcontinental telegraph line, which station he carried on in partnership with his brothers-in-law (the Messrs.

In 1888 he sat for the Legislative Council for the North-Eastern district as a colleague of Henry Ayers and was successful.

In 1891 he introduced a Bill to grant universal suffrage for South Australian women but it did not pass.