Frances Thesiger, Viscountess Chelmsford British noble (1869-1957) (1869–1957) Parents Cornelia Guest, Baroness Wimborne Ivor Guest, 1st Baron Wimborne Children Frederic Thesiger Anne Thesiger Margaret Thesiger Bridget Thesiger Andrew Thesiger, 2nd Viscount Chelmsford Joan Thesiger Siblings Rosamond Ridley, Viscountess Ridley Ivor Guest, 1st Viscount Wimborne Frederick Guest Elaine Augusta Guest Lionel Guest Henry Guest Corisande Guest Oscar Guest Partners Frederic Thesiger, 1st Viscount Chelmsford