Sylvia was born in Wolverhampton on 1 January 1893, the daughter of Frederick Ernest (director of Joseph Sankey & Sons Ltd) and Sylvia Jessie Sankey. In 1901, she was living at 29 Wellington Road, Bilston, with her parents and sister Dora Mildred. By 1911, the family were at Waterdale, Compton.
Sylvia served as a special police woman during the First World War. In 1927, she married Davis Green in Wolverhampton, and they had a daughter, Sylvia J. D., in 1928. Sylvia died on 13 October 1965, by which date her address was Ash Hill House, Compton. The value of her effects was £32,371.