author
A little-known 19th-century medical writer, he is chiefly remembered for a candid guide to sex, marriage, contraception, and childbirth at a time when such subjects were rarely discussed so openly. The surviving record is sparse, which makes his work itself the clearest window into his interests and approach.

by active 1875-1876 James Ashton
James Ashton is an obscure author whose surviving bibliographic record is limited, but contemporary title pages identify him as James Ashton, M.D. and describe him as a lecturer on sexual physiology. He is associated with The Book of Nature, published in New York by Wallis & Ashton in 1861.
That book is a practical manual for young people considering marriage, covering sexual physiology, procreation, contraception, and guidance around labor and childbirth. Its straightforward, instructional tone suggests a writer trying to present intimate medical subjects in a form meant for general readers rather than specialists.
Because so little reliable biographical information is easy to confirm, it is safest to view Ashton through this work: a 19th-century medical popularizer who wrote on reproductive health with unusual directness for his era.