Jord (Fjorgyn)

In Norse Mythology, Jord, also known as Fjorgyn, was an Earth goddess. Her mother was Night (Nott) and her father Annar. She was the mother of Thor (who was called her first born in The Lay of Thrym) and Frigg.

(Nicole Cherry, A list of Norse Beings, http://www.ugcs.caltech.edu/~cherryne)