on Gloucester Avenue where Fairchild was a novice in 1936, now the
North Bridge House School Margaret Fairchild was born in 1911 in
Hellingly in
Sussex, the daughter of Harriett ( Burgess; 1879–1963) and George Bryant Fairchild (1866–1944), a surveyor and sanitary inspector. Her brother was Leopold George Fairchild (1908–1994). A gifted pianist, according to her brother, around 1932 the middle-class and well-spoken Margaret Fairchild studied at the
École Normale de Musique de Paris in
Paris under the virtuoso
Alfred Cortot, and it has been said that she later played in a
promenade concert; however, she does not appear in the BBC's online Proms performance archive. In 1936, as Mary Teresa, she became a novice in the Convent of the
Society of the Helpers of the Holy Souls on
Gloucester Avenue in
Regent's Park (later the
Japanese School in London and now the
North Bridge House School), a short distance from
Gloucester Crescent where she famously returned decades later. Later in 1936 she was at St Joseph's Priory on Harrow Road West in
Dorking. In 1939, Fairchild was a religious sister and schoolteacher at St Gilda's Catholic School in
Yeovil,
Somerset. Her brother related that in the convent Fairchild was forced to abandon her love of music and playing in order to concentrate on her faith and she left the order following a breakdown. Her fellow nuns described her as "argumentative". During
World War II, Fairchild was trained to drive ambulances by the
ATS, which began her love for vehicles and driving. From at least 1950 to 1957 she lived with her mother at 98
Elgin Crescent in
Notting Hill. A commanding figure at nearly tall, Fairchild became increasingly erratic in her behaviour and constantly argued about religion with her mother, with whom she lived. Her brother had her committed to
Banstead Hospital, a psychiatric hospital, from which she escaped. She was to abscond from various other mental hospitals until she remained at large for a year and a day which legally demonstrated her competence to live unsupervised. Later she had an accident when the van she was driving was hit by a motorcyclist who subsequently died. Fairchild believed she was to blame for the accident and left the scene without giving her details, thereafter living in fear of arrest. At this time she changed her name to Sheppard to avoid detection and made her way back to the vicinity of the convent on Gloucester Avenue where she had taken her vows. However, she "had little to do with the nuns, or they with her", according to Bennett's book about her. ==Bennett and Gloucester Crescent==