Prättäkitti (also Rättäkitti) was a Finnish fortune teller or a witch from the household of Manninen, Loimaa (present day Ypäjä).
According to one story, a land-owning farmer, Teppo from Manninen, saw her rowing a boat while visiting Turku and decided to ask her hand in marriage.
Some claim that the boy was turned back to human but was left with a stub of a tail, which made it painful for him to ever sit properly again.
[2][3] In 2016 the musical theatre of Ypäjä made a children's play (script: Matti Mali, director: Jaakko Loukkola) based on this story.
[3] The first one states that Prättäkitti and his son did not have any means of crossing the river Loimijoki until they spotted an old milling stone.
[1] An annual Prättäkitti Day (Finnish Prättäkittipäivä) is celebrated in Loimaa at the end of February or the beginning of March.