(Emma) Jane Catherine Cobden Unwin, (1851–1947),
Suffragist and radical
Elected 1899 to the London County Council for the Progressive Party for Tower Hamlets (Bow and Bromley).
However, as a woman she was barred from taking her seat, making it effectively vacant from 1889 to 1892.
Her papers are at the University of Bristol [1]
Entry in Dictionary of National Biography and some information here [2]. Wikipedia page [3].