In the Kalevala the compiler Elias Lönnrot conflated several mythological persons into the main characters in an attempt to create a consistent narrative from several songs.
Ahti's story is of a man so eager to fight that he abandons his young wife and sets out on an adventure with his friend Tiera [fi].
[3] In the Kalevala, Ahti is mentioned (as a synonym of Lemminkäinen) in Rune IX, where his close association with the sea is made clear; in this verse his marriage to Kyllikki, and their vows, are described.
In Rune XX Ahti is briefly mentioned, and the conflation with Lemminkainen and Kaukomiele is made explicit.
In a fable similar to Mercury and the Woodman, Ahto dives to return the lost knife of a shepherd, out of pity.