Margaret Fowler became famous both for being one of the women with whom Dr Bogle had had an affair, and for not giving evidence at the inquest. She was also an old friend of Geoffrey Chandler's (though this seems to have been purely a platonic relationship).

Margaret Fowler had a degree in Physics and Mathematics from a London university. She worked at the National Standards and Radio Physics Library at the CSIRO in Sydney. Later, though before the Bogle-Chandler case, she worked at the Australian Institute of Management library in North Sydney.

She spent her final years living in England, and died at St Lambeth's Hospital, London, on 18 June 1977.