Marriage of HEDGES Edith Marion and WORTHINGTON Richard Till, in Kensington, London, 1904. Volume 1A, page 424.
An article by A.D. Hard in the April 1909 edition of 'The Medical World'.
Birth certificate of Bertold Paul Wiesner
Newspaper clipping from page 10 of the 3 April 1947 edition of the Ellensburg Daily Record (Washington, USA). Via Google Books.
Frederick Marion (stage name of Josef Kraus) was a Czech who who could "shatter a wine glass by concentration of thought". He wrote a book called In My Mind's Eye, with the forword written by BPW and R.H. Thouless.
Death certificate of Bertold Paul Wiesner, who died of a pulmonary embolism on 7 January 1972 in Ealing, UK.
Excerpt from the 'Answer Me This' podcast, featuring a question from Charlie about whether to engage with the BPW descendents.