In Skáldskaparmál, Thor's wife the goddess Sif is either herself called "Járnsaxa" or called by a kenning meaning "the rival of Járnsaxa",[3] throwing confusion on whether Sif is or is not distinct from Járnsaxa the mother of Magni.[4] At the end of the story, Odin argues that Thor did wrong to offer the splendid horse Gullfaxi to Magni, the son of a giantess, rather than to himself, the father of Thor.[1]