There is evidence that in the 19th century. in England, there was a man with a second person on the nape

Edward Mordake (or Edward Mordeyk) reportedly was heir to the British peerage in the XIX century. According to legend, he had an additional person behind the head, which could not eat or speak, but has been able to laugh and cry. Unhappy begged doctors to remove her second "demonic head," as she whispers to him horrible things at night, however, none of the doctors did not dare to such an operation. At the age of 23 years he committed suicide, Edward. According to one version, he was poisoned, on the other - put a bullet between the eyes twin. And in both cases, he left a suicide note in which he asked to be separated from it is diabolical face, fearing a terrible whisper would haunt him even in the grave.

Source: ru.wikipedia.org

via factroom.ru