Percival Raymond Begg AO was a professor at the University of Adelaide School of Dentistry and a world renowned orthodontist. He was famous for developing the "Begg technique". Permanent displays dedicated to his Begg technique can be found in the Smithsonian Institution in Washington DC, the Library of the American Dental Association in Chicago, and the PR Begg Museum at the University of Adelaide.
From his Australian Dictionary of Biography profile we see:
He was born on 13 October 1898 supposedly in a tent on the Coolgardie gold fields in Western Australia, and registered as Raymond Percy. He was the eldest of three children of English-born parents Percy William Begg, accountant, and his wife Fannie Elizabeth, née Jacob. In 1900 the family moved to Adelaide.
He spent a year as a jackeroo before enrolling in dentistry at the University of Melbourne (B.D.Sc., 1924). In 1924-25 he trained at the (E. H.) Angle College of Orthodontia, Pasadena, California, United States of America. Returning to Adelaide, he entered into practice as an orthodontist and lectured part time (1926-63) at the University of Adelaide.
Doctor Percy Raymond Begg was a founding member (1927) of the Australian Society of Orthodontists and honorary member of the Australian Dental Association, South Australian branch. Begg was also a fellow of the International College of Dentists and of the (Royal) Australian College of Dental Surgeons. In 1977 the American Board of Orthodontics presented him with the Albert H. Ketcham memorial award. The Australian Society of Orthodontists’ Foundation for Research and Education established the P. Raymond Begg award in 1978. Begg societies of orthodontics were formed in Europe, North America, Japan and the Philippines.
On 26 April 1928 at St Andrew’s Church of England, Walkerville, he had married Evelyn Ellen Hamilton. Dr. Begg retired in 1980 and the next year was appointed an Officer of the Order of Australia. He passed away on the 18th of January 1983 at Glen Osmond, survived by his wife, and their son and two daughters. He was cremated and his ashes were interred at the Centennial Park Cemetery in Pasadena, South Australia.