Doctor and engineer. Founder of the Malthusian League.
Charles was an English engineer, physician and public health scientist, and the first President of the Malthusian League. He published books on the topics of the evils of prostitution and the dangers of tobacco smoking.

Doctor and promotor of birth control. President of Malthusian League.
Alice was an English physician, campaigner for women’s rights, and the first British woman to qualify as a chemist and pharmacist. She and her life partner, Charles Robert Drysdale, actively supported a number of causes, including free love, birth control, and destigmatisation of illegitimacy.