Iord (or Jord) is the Norse personification of earth. “Jord” is also the Swedish word for “earth,” which is pretty cool. In terms of god relationships, Iord is a consort of Odin, mother of Thor, and daughter of Night.
Interestingly, Night is the daughter of the giant Narfi, which would mean Iord is of giant descent. I’m not sure if that’s significant or not, as my grasp of Norse mythology is sadly lacking. Iord’s father was someone called Annar, though I can’t find who he was other than being listed in a long line of fathers and sons.
It’s mentioned that perhaps Snorri Sturluson intended “Annar” as a variation of “Odin” due to the following passage regarding Odin: “The earth was his daughter and his wife. Out of her he begot the first of his sons, that is Asa-Thor.” (Sturluson, p. 13). The index found in the Edda however, only makes mention of “Annar” having the literal meaning of “second,” as he was Night’s second husband.
It’s all very interesting, and makes me think that maybe Odin isn’t called the All-father for nothing.
Source: Sturluson, Snorri, Edda, Everyman, 1995. Translated and edited by Anthony Faulkes.