[5][6] Both parents were active in social reform, with mother founding the Leigh Browne Trust to promote scientific research without animal experimentation.
[2] Thomazine and her sister Annie Leigh Browne worked to improve housing conditions in London, including at Toynbee Hall.
[1] When the National Union of Women's Suffrage Societies (NUWSS) formed a branch in Sidmouth in 1909, she became secretary, holding the post until 1918.
[2] Known particularly for her outreach work, Thomazine proposed a resolution that led to the branch's support for the creation of an Infants’ Welfare Club in Sidmouth.
[3] Her Royal Astronomical Society obituary read:To the last she led an active life, her mind was undimmed and she took a great interest in all the affairs of the day.