Jane Evans, a Welsh housewife, agreed to be filmed for BBC television being regressed back to a past life by Arnell Bloxham, president of the British Society of Hypnotherapists and a respected practitioner. She had originally consulted him about rheumatism and under hypnosis, revealed seven past lives including one life - where the regression was televised - where she identified herself as a Jewish woman living in the city of York in 12th century England. She described many details of Jewish life at the time and how she and the local Jews were forced to wear badges to identify themselves. She also spoke of a terrible massacre of the Jewish population by the local townspeople. During this event, she recalled taking shelter with her children in the crypt of a local church, but they were discovered by the mob and that is where she died.
Professor Barrie Dobson, an expert on Jewish history at York University, was called in to check the information from her memories. He found that her description of 12th century Jewish life was impressive with its accuracy and in fact he was convinced that some of the details would have only been known to professional historians. However it also seemed that some details appeared to be quite incorrect. Firstly, it was not until the 13th century (1215 to be precise) that the Church authorities in Rome decreed that Jews in Christian countries were to wear special identification. Secondly, from her description, the church had to have been St. Mary's Castlegate, but it did not have a crypt.
However further investigation revealed that the practice of making Jews wear identification was already widespread in England during the 12th century before the church decree. Then astonishingly several months later, during renovation of the church a sealed chamber was discovered below the floor which appeared to have been a crypt - a very rare phenomenon indeed for churches in the area.
So not only did her regression bring forth obscure details which were historically accurate, it also yielded historical information which should most definitely not have been available at that time.