The belief in Tiddy Mun was first documented in June 1891 in an article by M. C. Balfour in the Folklore Society journal "Folk-Lore". In the article she recalls a story, collected in the Ancholme Valley, told to her by an older person who spoke of a curse of pestilence that had been cast upon his village by the Tiddy Mun, who was angered at the draining of the Fens by the Dutch, led by Cornelius Vermuyden, in the seventeenth century. According to the story the Tiddy Mun was eventually placated after the villagers gathered at twilight at the time of the new moon, poured buckets of water into the dyke and apologised for the damage caused.