Helen Mary Mayo, (1 October 1878 – 13 November 1967) was an Australian medical doctor and medical educator, born and raised in Adelaide. In 1896, she enrolled at the University of Adelaide, where she studied medicine. After graduating, Mayo spent two years working in infant health in England, Ireland and British India. She returned to Adelaide in 1906, starting a private practice and taking up positions at the Adelaide Children's Hospital and Adelaide Hospital (later the Royal Adelaide). In 1909, she co-founded the School for Mothers, where mothers could receive advice on infant health. This organisation, which became the Mothers' and Babies' Health Association in 1927, eventually established branches across South Australia and incorporated a training school for maternal nurses. In 1914, after unsuccessfully campaigning for the Children's Hospital to treat infants, Mayo co-founded the Mareeba Hospital for infants. In addition to her medical achievements, Mayo participated in a number of other organisations. She was heavily involved in the University of Adelaide, serving on the university council from 1914 to 1960 (the first woman in Australia to be elected to such a position) and establishing a women's club and boarding college there. She was also the founder of the Adelaide Lyceum Club, an organisation for professional women. Mayo died on 13 November 1967, with the Medical Journal of Australia attributing the success of South Australia's infant welfare system to her efforts. Early life and education Helen Mary Mayo was born in Adelaide, Australia on 1 October 1878. She was the eldest of the seven children of George Gibbes Mayo (1845–1921), a civil engineer, and Henrietta Mary Mayo, née Donaldson, (1852–1930) and granddaughter of George Mayo, a prominent Adelaide doctor, and Maria Gandy. Her formal education commenced at the age of 10, when she began receiving regular lessons with a tutor. At the age of 16, she was enrolled in the Advanced School for Girls on Grote Street (a forerunner of Adelaide High School), from which she matriculated after one year, at the end of 1895. Despite never having heard of female doctors, from an early age Mayo had been set on pursuing a career in medicine. However, Edward Rennie, then a professor at the University of Adelaide advised Helen's father that she was too young to commence study in Medicine, so in 1896, Mayo enrolled in the Faculty of Arts at the University of Adelaide. The death of her younger