Alexis-Vincent-Charles Berbiguier de Terre-Neuve du Thym, Illustration from 'Les farfadets'
Cornell University, New York
Les farfadets ou Tous les démons ne sont pas de l'autre monde ("The Imps; or, All the demons are not from the other world"), originally published in three volumes between 1818 and 1820, recounts Berbiguier's life long struggle with farfadets, "imps" or "goblins". He relates that these imps harassed him persistently ever since his unfortunate encounter with two "sibyls", or fortune tellers, whom he consulted in an idle moment in his youth. For this sin, he was delivered into the hands of impish tormentors. The imps continued to follow Berbiguier through several lengthy stays in Avignon and Paris. The chief imp among his tormentors was named Rhotomago; Rhotomago's immediate superior was Beelzebub himself. He alleged that he received, and answered, written correspondence from all of these Hellish dignitaries.
By research and experiment Berbiguier determined a number of herbal and other remedies that had the power to keep the imps in check. He wrote his book, he relates, to reveal his struggles and his methods to the world.
Source 1
Source 2