Fawcett was born Dulcie Martha Mutter in Balaklava, South Australia, Australia, on 30 January 1913, to parents William Mutter and Amy Louisa Sampson. In her youth, she lived with her parents on one of her grandfather’s farms in Balaklava.

In 1926, she, along with her parents and her sister Ethel, departed from South Australia and relocated to a rural area in Western Australia. They settled in Dudawa, where she lived until 1938. She received her education at home for one year before enrolling in Dudawa State School. To reach school, she either walked or rode a pony. On her 21st birthday, her parents arranged for her to embark on a six-week holiday to South Australia by boat. When she applied for her driver’s license, the local police officer didn’t find it necessary to administer a test, as he had already observed her driving skills. She had been operating her father’s truck for a year or two prior to obtaining her license.

In late 1939, she relocated to live with her parents in the Perth suburb of Belmont. On July 6, 1940, she married “Bert” Herbert Barkla Fawcett in Perth. The couple had four daughters, one of whom was stillborn on May 5, 1942. They resided in Arrino until 1949 when they moved to Nabawa. In 1974, they made another move to Yetna, where her husband passed away in 1990. Shortly before his death, her husband sold the farm they had been living on.

At her family’s request, she later resided at Harbour Pines Retirement Village in Geraldton, where she stayed until her passing on 2 November 2023, at the age of 110 years, 276 days.