This article discusses the work of Dr Mary Louisa Gordon, who was appointed as the first English Lady Inspector of Prisons in 1908, and remained in post until 1921. Her attitude towards and treatment of women prisoners, as explained in her 1922 book Penal Discipline, stands in sharp contrast to that of her male contemporaries, and the categorisation of her approach as ‘feminist’ is reinforced by her documented connections with the suffragette movement. Yet her feminist and suffragist associations also resulted (...) in the marginalisation and dismissal of her work, such that Mary Gordon and Penal Discipline are virtually unknown today. Nevertheless, her insights into the position and needs of women prisoners retain a striking contemporary relevance. (shrink)