As the poet Bragi the Old says:
Gefion dragged with laughter
from Gylfi liberal prince
What made Denmark larger,
so that beasts of draught
the oxen reeked with sweat;
four heads they had, eight eyes to boot
who went before broad island-pasture
ripped away as loot.
A Goddess whose name means simply ‘giver’, Gefn was regarded by the Norse-Germanic people as a frolicsome, fertile figure and seeress who embodied the earth’s greenery. Source
This Norse goddess of unmarried women is the fourth goddess of the Æsir, following Frigg (the wife of Odin), Sága, and Eir (the best of physicians), according to The Prose Edda of Snorri Sturluson....
Gefjon is a fertility goddess, especially connected with the plough.
She was considered the patron of virgins and the bringer of good luck and prosperity...
Gefjon created the Island of Zealand...◁
Gefjon was a giantess who dreamed of becoming a Goddess. With only farming skills, great strength and determination, she made her way barefoot to Asgard, only to be laughed at by Odin.
She pledged to give him whatever he wanted, and he asked for as much land in the human realm as could be crossed in a day by a fast horse.
Njord gave her advice and encouragement when she despaired, and she made her plan....She won from the Swedish king a promise: to have as much land as she could plough in a day.
To Giantland she then returned to bear four sons to the man her parents had promised her to. When they were old enough, she returned to Midgard, and with these sons taking the form of four bulls, she ploughed an island off from the mainland.
This is how she paid for and won her place in Asgard. Later she earned Hela’s permission to welcome any willing woman who died unmarried to serve her in working the land...◯◯
▷ Gefion could be another form of Frigg who is also known under that name.