- 8 April 1900
Ashton-On-Mersey, Cheshire, United Kingdom
- 21 November 1979
Sydney, New South Wales, Australia
- Author, Conservationist, Feminist, Journalist, Lawyer, Mountaineer, Pacifist, Photographer, Political activist and Print Journalist
Marie Byles was the first woman to qualify to practise law in New South Wales. As Honorary Solicitor, she worked with Jessie Street to change the law regarding women's guardianship of their children. Establishing her own legal practice allowed her to devote herself to bushwalking, mountaineering and conservation of the environment. She was responsible for reserving Bouddi Natural Park north of the Hawkesbury River. A Pacifist, Byles was a devotee of Gandhi and developed an interest in Buddhism. A founding member of the Buddhist Society of New South Wales, she became an international authority on Buddhism and wrote several books on the subject.