T. F. Thiselton-Dyer, The Ghost World
“ According to a popular legend, the White Lady is seen in many of the castles of German princes and nobles, by night as well as by day, especially when the death of any member of the family is imminent. She is regarded as the ancestress of the race, ‘shows herself always in snow white garments, carries a bunch of keys at her side, and sometimes rocks and watches over the children [228] at night when their nurses sleep.’ The earliest instance of this apparition was in the sixteenth century, and is famous under the name of ‘Bertha of Rosenberg,’ in Bohemia. ”
