Where Norse Myth Came From?
Norse mythology was a system of good stories that presented the belief and religions of the Scandinavian peoples, including those settling on Iceland where many of the sources for Norse mythology were recorded and written down.
What Norse mythology had? They were the stories about the Norse pantheon and the Nine Worlds. Norse mythology had its own way of explaining the creation of the cosmos and also the end of that glorious period of the Norse pantheon. The myth included many gods that we might know, namely Odin the chief god, Thor the hammer-wielding god of thunder and storm, or Loki the most mischievous trickster, etc.
The majority of the Old Norse myth was written down in Iceland around the 13th century. The two main sources of Norse myth were the Poetic Edda and Prose Edda composed by Snorri Sturluson. The Poetic Edda consisted of both the stories about Norse gods and the stories about Germanic heroes like Sigurd the Volsung. Many claimed that this was written down later than other Edda but the language and the forms of poems in the source seemed to be composed earlier than its transcription.
Other texts, such as sagas, out of the Edda provided further knowledge about the Viking belief and Norse mythology. Such sagas consisted of tales telling from family histories to migration periods.
Many ancient objects were excavated from the land of the ancient Viking, which could be concluded as depictions from Norse mythology. Those artifacts could be the amulet of Mjolnir hammer or the small female figures which were known as the Valkyries - Odin's female spirit helpers. Many Viking runestones were found as well. They depicted scenes from Norse mythology such as Thor went fishing Jormungand, Odin and eight-legged horse Sleipnir, or Odin being slain by Fenrir, to name but a few.