Peder Jönsson
Peder Jönsson (died 1640), was a Swedish hunter and fisherman from Söderköping, who was executed for having confessed to sexual intercourse with a Sjörå (a lake-nymph; a mythical female creature of the lake). Though there are other cases of the same kind in 17th-century Sweden, his is the only case where the sentence is confirmed to have been executed.