The youngest daughter of Archibald Campbell of Quebec, in April 1854, Hilda Eliza married Charles Booth Brackenbury.
Hilda left London, and along with her children, Georgina, Marie and Hereward, she moved in with her siblings in law, Andrew and Margy Noble, to Newcastle upon Tyne.
Quickly her daughters Georgina and Marie also joined the WSPU and they transformed their studios in Holland Park into classrooms where they could train women in public speaking.
[2] On 18 November 1910, Hilda Brackenbury joined Louisa Anderson, Emmeline Pankhurst, Alfred Caldecott, Hertha Ayrton, Mrs Elmy, Princess Sophia Duleep Singh, and 300 other women to petition Prime Minister Asquith for voting rights.
[5] In 1913 the government passed the Prisoners (Temporary Discharge for Ill Health) Act which gave the authorities the power to release hunger-striking suffragettes and then rearrest them when they had recovered.