Jean Marcia Montagu, Baroness Swaythling, CBE (née Leith-Marshall; 14 August 1908 – 13 December 1993), first married name Knox, was Director of the Auxiliary Territorial Service from July 1941 to October 1943.
[3] Knox joined the Auxiliary Territorial Service nearly a year before the outbreak of World War II,[4] in October 1938,[5] and undertook kitchen duties.
[11] She travelled to Canada in September 1942 to inspect the Canadian Women's Army Corps and assisted in its recruiting campaign.
[13] On 30 October 1943, she relinquished the appointment of Director, Auxiliary Territorial Service,[14] for health reasons.
[14] For six weeks in 1948, Knox was managing director of Peter Jones, Sloane Square, Chelsea, London.