Note 82 — 4 LADY ISABEL AND THE ELF-KNIGHT (continued 2)

It is well known that in the Middle Ages the blood of children or of virgins was reputed a specific for leprosy (see, e.g., Cassel in the Weimar Jahrbücher, I, 408.) Some have thought to find in this fact an explanation of the murders in these ballads and in the Bluebeard stories, and, according to Rochholz, this theory has been adopted into popular tradition in the Aargau. So far as this cycle of ballads is concerned, there is as much ground for holding that the blood was wanted to cure leprosy as for believing that the gold was wanted for aurum potabile.