Munro was born in
Liskeard, Cornwall, and brought up in South Africa by her father, John Donald, a doctor, and her mother, a concert pianist. The family moved to South Africa for her father's health, but he died 7 October 1927, shortly after his wife, Helen Barrow Donald (nee Wilson) who died 7 December 1926. The four surviving children were left money and trustees to look after them. Munro's brother was physician
Ian Donald, a pioneer of medical and obstetric ultrasound. In England, she went to
St Hilda's College, Oxford, initially to study mathematics, but she switched subjects and graduated with a first degree in
Philosophy, Politics and Economics. and she was left a widow with a child. She went on to work in the
Air Ministry, first working for
Robert Watson-Watt, who helped develop
radar. She rose through the ranks until she was an under-secretary. The governors decided to take a risk on Munro, given reassurance by her predecessor. Other sources say that she was indeed head hunted. Munro abolished the school uniform at the school, feeling that the girls were devoting too much energy to defying school uniform requirements; however, the girls then redirected their energy to appearing in fashionable clothes. Following her departure from the school in 1974, she left education and spent many years leading two health authorities and government enquiries. Munro died in
West Wittering in 2008; she was survived by her son Alan. ==References==