Erda, Odin's wife was an Earth goddess of ancient wisdom. A giantess. Daughter of Annar and Nott. Daughter of Odin, some say. First wife of Odin. Mother of Thor. In some stories, she is the daughter of the giantess Fiorgyn and the mother of Frigga, in others she is Fiorgyn. In some accounts, she was one of the Asynjur. She is also called Jord, Jordh, and Fiorgyn(n).