Slagfiðr

In Norse mythology, Slagfiðr (Old Norse "beating-Finn")^[1] is one of a trio of brothers along with Völundr and Egil. In the Poetic Edda poem Völundarkviða, Slagfiðr is attested as the seven-year husband of the valkyrie Hlaðguðr svanhvít.

Drawing of a portion of Franks Casket relevant to the tale of Wayland the Smith, showing Völundr holding with a pair of tongs the skull of one of Níþoþr's children, which he is fashioning into a goblet. The boy's body lies at his feet. Böðvildr and her attendant also appear, and Egil, who in one version made Völundr's wings, is depicted in the act of catching birds.