Baume was born in
Sydney on 30 January 1935. He was the son of Jean (née Brodziak) and Sidney Erne Baume. His paternal grandfather
Frederick Baume was a member of parliament in New Zealand, while his grandmother
Rosetta Baume was one of the first women to stand for parliament in New Zealand. Baume spent his early childhood in
Melbourne, where his father was manager of radio station
3UZ. He attended Ormond State School and Grimwade House,
Melbourne Grammar School's preparatory school. The family later returned to Sydney where they settled in the suburb of
Collaroy. Baume completed his education at Narrabeen Public School,
North Sydney Boys High School, and
Sydney Grammar School. After leaving school he completed his
national service as a medical orderly at
RAAF Base Richmond. He received the further degree of
Doctor of Medicine from the University of Sydney in 1969. Baume worked in private practice as a gastroenterologist and physician at Royal North Shore Hospital before entering parliament. He was also a clinical lecturer at the
University of Sydney. ==Political career==