1) Skaldic poem 
Tryggvaflokkr (the `Flokkr-poem of Tryggvi`) was an Old Norse poem about Tryggve the Pretender, an 11th-century Viking chieftain who purported to be the son of Olaf Tryggvason and tried to conquer Norway in 1033. It is usually attributed to Sighvat Thordarson, a skald and court poet of Canute the Great. The only surviving portion of the poem is .....