Mary Perowne was born in 1869 in Stalbridge, Dorset. In the 1911 census she was living at Redenhall Rectory with her father Thomas Thomason Perowne who was the Rector of Redenhall and former Archdeacon of Norwich from 1878-1910. Her role at the British Red Cross Hospitals was the Commandant. She was responsible for the daily running of the hospital except for the medical and nursing duties. She also looked after the Quartermaster duties which included the receipt, custody and issue of articles in the provision store. After Caltofts Hospital closed in 1918 she moved to another Hospital, Swanton House in Melton Constable. She died in April 1955 at Chevington House near Bungay aged 85.