This deity sired one son 
This deity sired one son with the giantess Jarnsaxa, and uses the help of the giantess Grid to defeat Geirrod. One of this god's animals is crippled when marrow from its thighbone is drunk by Roskva's brother; as punishment, this god forces Thialfi to become his servant. This owner of Toothgrinder and Toothgnasher, two chariot-pulling goats, is unable to lift a cat which is actually the Midgard Serpent. This god, the husband of the golden-haired Sif, once dressed up in a bridal gown as Freya to retrieve a stolen weapon which returns to him when thrown. For 10 points, name this giant-slayer and wielder of Mjolnir, the Norse god of thunder.
This deity sired one son with the giantess Jarnsaxa, and uses the help of the giantess Grid to defeat Geirrod.
Thor [or Donar]