1) Eddic poetry 
Grottasöngr or the Song of Grótti is an Old Norse poem, sometimes counted among the poems of the Poetic Edda as it appears in manuscripts that are later than the Codex Regius. The tradition is also preserved in one of the manuscripts of Snorri Sturluson`s Prose Edda along with some explanation of its context. The myth has also survived independ....