On 3 August 1881 at Albury Registry Office, she married jeweller John Collins, but the marriage was unhappy and they separated in 1889, Henrietta and her four children returning to her parents' farm at Temora.
[1] Greville worked as a seamstress, but the 1890s depression led her to move to the goldfields at West Wyalong, where she helped to establish a local branch of the Political Labour League.
She married miner and union organiser Hector Greville on 30 August 1894, and despite moving frequently to support the family, they reportedly had a happy marriage.
In 1902 the family was in Sydney, where Greville became associated with Bertha McNamara's radical group, and in 1908 she became an organiser for the White Workers' Union.
Her husband died in 1938, but Greville remained a public figure, and in 1945 was made a life member of the Union of Australian Women.