Lillian was born on Thursday 8 December 1887 in
St Pancras, London, England. She was the eldest of seven children born to Benjamin Harris, a marine store keeper and Elizabeth Tasker who had married in
Marylebone,
Middlesex earlier that year. In the early 20th century Lillian became an active member of the suffragette movement and also around this time she was working as a shop assistant in
Selfridges in
Oxford Street, London before moving to Australia in December 1911. Lillian lived in
Melbourne and also become a suffragette there, joining the
Women's Political Association and the
Industrial Workers of the World. Whilst in Australia she gained a reputation for being a brilliant public speaker and newspapers reported on her talk to a Socialist audience on 'White Slaves and Militant Suffragettes' at the Gaiety Theatre, Melbourne on 18 May 1913 Lillian may have refused to pay this fine and was sent to Holloway to pay of the debt Militant activity on behalf of the unemployed grew in the early 1920s and Lillian was highly active at this time. A small group, of which Lillian was a member, occupied a piano factory in St Pancras to persuade the workers to refuse to work
overtime and to force the management to give them a wage increase. These sorts of occupations had become very common at the time. By the summer of 1921, Lillian was gaining publicity in the national and London press as 'Red Rosa', the 'mystery women with hypnotic eyes that was behind the unemployment agitation'. By August 1922, Lillian was living on Huntingdon Street, Caledonian Road in Islington. A police raid on this address found two German machine guns for which Lillian was arrested and taken into
custody, but later acquitted. Whilst she was being held in custody, the headquarters of the
Finsbury unemployed was renamed 'Thring Hall' in her honour. Around 1925, Lillian had moved to
Battersea and during the
1926 General Strike was a member of the Battersea Council for Action. By 1927, Lillian and her husband Robert were living in Sonderburg Road, Islington and she had now become involved in the Women's Co-operative Guild as well as continuing her work with the unemployed. From the 1930s, Lillian was active in anti-Fascist politics in North London. She was also involved in union organising, especially amongst female shop workers. When the
Second World War broke out, to which she was politically opposed, she helped men on the run from
conscription. During the War, Lillian fell out with her son Cyril as he was working with
British Intelligence at the time. By the end of the war, Lillian was a supporter of the local
squatters movement and became the secretary of the Rochford branch of the
Agricultural Worker's Union which became a strong force in the area with her help. ==Political activity==