Andiron

Andiron was the son of Alderman and the brother of Hearthstone. He was killed by a Brunnmigi spirit.

The Hammer of Thor
Magnus is told of Andiron's death.

The Ship of the Dead
Andiron's spirit appears and pleads with Alderman, who was in the form of a dragon. Alderman dismisses him, thinking him to be an illusion by Hearth.