Sigyn in the context of "Mårten Eskil Winge"

Loki is a god in Norse mythology. He is the son of Fárbauti (a jötunn) and Laufey (a goddess), and the brother of Helblindi and Býleistr. Loki is married to the goddess Sigyn and they have two sons, Narfi or Nari and Váli. By the jötunn Angrboða, Loki is the father of Hel, the wolf Fenrir and the world serpent Jörmungandr. In the form of a mare, Loki was impregnated by the stallion Svaðilfari and gave birth to the eight-legged horse Sleipnir.

Like other gods, Loki is a shape shifter and in separate sources appears in the form of a salmon, a mare, a fly, and possibly an elderly woman named Þökk (Old Norse 'thanks'). While sometimes friendly with the gods, Loki engineers the death of the beloved god Baldr. For this, Odin's specially engendered son Váli binds Loki with the entrails of one of his sons, where he writhes in pain. In the Prose Edda, this son, Nari or Narfi, is killed by another of Loki's sons, who is also called Váli. The goddess Skaði is responsible for placing a serpent above him while he is bound. The serpent drips venom from above him that Sigyn collects into a bowl; however, she must empty the bowl when it is full and the venom that drips in the meantime causes Loki to writhe in pain, thereby causing earthquakes.

The Gosforth Cross is a large stone monument in St Mary's churchyard at Gosforth in the English county of Cumbria, dating to the first half of the 10th century AD. Formerly part of the kingdom of Northumbria, the area was settled by Scandinavians some time in either the 9th or 10th century. It has gained reputation for its combination of Christian symbols with Nordic symbols, being a tangible piece of evidence of the impact of the Christianization of Scandinavia.

The deities depicted on the monument have been identified with Sigyn attempting to protect her bound husband Loki, a horn-wielding Heimdallr, Víðarr in the process of defeating Fenrir, and Thor in a failed attempt to capture Jörmungandr. The images likely adapt scenes from the Poetic Edda. Also depicted on the monument is the crucifixion of Jesus. The tree-like design of the base of the cross may represent Yggdrasil or a mythical tree of life.