Question: Óttarr svarti ("Óttarr the Black") was an 11th-century Icelandic skald, he was the last court poet, finally of which King of Denmark, England and Norway; together often referred to as the North Sea Empire?
Sentence (from "Knútsdrápa (Óttarr svarti)"): It has been debated whether strophe 9 truly belongs to Óttarr's "Knútsdrápa" or to a poem which Óttarr composed for Cnut's father Svein Haraldsson.
Relevant evidence: No