Berthold P. Wiesner

Bertold Paul Wiesner FRSE (1901–1972) was an Austrian Jewish physiologist noted firstly for coining the term 'Psi' to denote parapsychological phenomena; secondly for his contribution to research into human fertility and the diagnosis of pregnancy; and thirdly for being biological father to upwards of 600 offspring by anonymously donating sperm used by his wife the obstetrician Mary Barton to perform artificial insemination on women at her private practice in the Harley Street area of London.