Crewdson was born on 28 March 1872 in
Manchester, England. Her father was William Crewdson, a manufacturer, and her mother was Ellen Waterhouse, the sister of architect
Alfred Waterhouse. Waterhouse had designed the college Crewdson was to be associated with throughout her career. Both Crewdson's parents were dead by 1881, and she was raised by a housekeeper who was also a governess. Crewdson moved to Bournemouth for the sea air, before starting at St Leonard's School in
St Andrews, Scotland in 1893. She joined Girton College, Cambridge, as an undergraduate the following year to read
natural sciences and
geology. In 1897-8, her final year as an undergraduate, she was elected senior student by her peers. In 1899 she bought her own house near
Woburn Sands in
Bedfordshire. She opened the house as a holiday home for professional women in the summer months. == Career ==