She was born Hypatia Bradlaugh, at 3 Hedger's Terrace, Hackney, London,[REF] the second daughter of Charles Bradlaugh, the first openly atheist Member of Parliament and founder of the National Secular Society, and Susannah Lamb Hooper.
Bradlaugh Bonner was educated in private schools in London and Paris, and qualified as a science teacher from the University of London,[REF] which admitted women to "full privileges" (i.e.