Cyfarfu Charles â'r gwrthwynebydd cydwybodol Lancelot Hogben tra yng Nghaergrawnt, a phriodwyd hwy ym 1918.[2] Allan o ddwsin neu fwy o gyplau sosialaidd a ffeministaidd ym Mhrydain ar ddechrau'r 20g, Charles oedd yr unig wraig i gadw ei henw.[3] Cafodd y cwpl ddau fab a dwy ferch[4] cyn gwahanu ym 1953 ac ysgaru yn 1957.[5]
Gweithiodd Charles ar gyfraddau ffrwythlondeb a phriodas i Dominion Bureau of Statistics yng Nghanada. Ym 1934, rhagwelodd Charles ddirywiad mawr ym mhoblogaeth y Deyrnas Unedig pe bai'r cyfraddau ffrwythlondeb yn parhau i ostwng. Ysgogodd y canlyniadau hyn iddi godi llais yn erbyn yr egwyddor gyffredin o ewgeneg a dderbyniwyd ar y pryd.[6][7] Yn dilyn hynny bu'n gweithio fel Ymgynghorydd Rhanbarthol mewn Epidemioleg ac Ystadegau Iechyd ac fel Ymgynghorydd Ystadegau Poblogaeth ar gyfer Sefydliad Iechyd y Byd yn Singapôr a Delhi Newydd.[1]
Charles, E (1931), "Metabolic Changes Associated with Pigmentary Effector Activity and Pituitary Removal in Xenopus Laevis.—I. Respiratory Exchange", Royal Society of London Proceedings Series B107 (753): pp. 486–503, doi:10.1098/rspb.1931.0010
Hogben, L; Charles, E,; David Slome (1931), "Studies On The Pituitary: VIII. The Relation Of The Pituitary Gland To Calcium Metabolism And Ovarian Function In Xenopus", J. Exp. Biol.8: pp. 345–354Hogben, L; Charles, E,; David Slome (1931), "Studies On The Pituitary: VIII. The Relation Of The Pituitary Gland To Calcium Metabolism And Ovarian Function In Xenopus", J. Exp. Biol.8: pp. 345–354Hogben, L; Charles, E,; David Slome (1931), "Studies On The Pituitary: VIII. The Relation Of The Pituitary Gland To Calcium Metabolism And Ovarian Function In Xenopus", J. Exp. Biol.8: pp. 345–354
Zoond, A; Charles, E (1931), "Studies in the Localisation of Respiratory Exchange in Invertebrates: I. The Respiratory Mechanism of the Fresh-Water Crab Potamonautes", J. Exp. Biol.8: pp. 250–257
Charles, E (1932), The Practice of Birth Control, London: Williams and Norgate, OCLC253047932
Hogben, L; Charles, E (1932), "Studies on the Pituitary: IX. Changes in Blood Calcium Following Injection of Anterior Lobe Extracts and Sexual Excitement in Female Rabbits", J. Exp. Biol.9: pp. 139–148
Charles, E (1934), The Twilight of Parenthood: A Biological Study of the Decline of Population Growth, London: Watts and Company
Charles, E (1936), The Menace of Underpopulation: A Biological Study of the Decline of Population Growth, London: Watts and Company
Charles, E (1937), "The Changing Structure of the Family in Australia", Economica (Economica, Vol. 4, No. 15) 4 (15): pp. 245–273, doi:10.2307/2548953, JSTOR2548953
Charles, E; Moshinsky, P. (1938), "Differential Fertility in Endland and Wales during the Past Two Decades", in L. Hogben, Political Arithmetic, London: Allen and Unwin, pp. 106–160
Charles, E (1941), "The Nuptiality Problem with Special Reference to Canadian Marriage Statistics", Canadian Journal of Economics and Political Science2: p. 477
Charles, E (1942), "The Trend of Fertility in Prince Edward Island", The Canadian Journal of Economics and Political Science (The Canadian Journal of Economics and Political Science / Revue canadienne d'Economique et de Science politique, Vol. 8, No. 2) 8 (2): pp. 213–246, doi:10.2307/136951, JSTOR136951
Charles, E (1943), "Differential Fertility in Canada, 1931", The Canadian Journal of Economics and Political Science (The Canadian Journal of Economics and Political Science / Revue canadienne d'Economique et de Science politique, Vol. 9, No. 2) 9 (2): pp. 175–218, doi:10.2307/137418, JSTOR137418
Charles, E (1946), The Changing Size of the Family in Canada, Ottawa: Dominion Bureau of Statistics
Charles, E (April 1953), "The Hour of Birth: A Study of the Distribution of Times of Onset of Labour and of Delivery throughout the 24-hour Period", Br J Prev Soc Med7 (2): pp. 43–59, doi:10.1136/jech.7.2.43, PMC1058488, PMID13051536
↑Outram, Dorinda; Abir-Am, Pnina G. (1987), Uneasy Careers and Intimate Lives: Women in Science, 1789–1979, New Brunswick, N.J: Rutgers University Press, ISBN0-8135-1256-5
↑Pedersen, Susan (1993), Family, Dependence, and the Origins of the Welfare State in Britain and France, 1914–1945, Cambridge, UK: Cambridge University Press, ISBN0-521-55834-4