Helen François de Chaumont (1866–1949)
Schoolteacher. Daughter of Francis Stephen Bennet François de Chaumont.
Census returns of England and Wales 1911 (The National Archives: Public Record Office RG14/12288/506)
Correspondence vol. 19, letter from F. S. B. F. de Chaumont to W. E. Darwin, 11 March 1871.
England & Wales, national probate calendar (index of wills and administrations), 1858–1966, 1973–95 (Ancestry.com, accessed 24 October 2017)