Is Beowulf a work of art or historical?

Is Beowulf a work of art or historical?
The poem, Beowulf, is a fictional representation of a historical tale. The story is told by taking events from the past and revamping them as fiction. The tale of Ingeld and Freawaru goes back to the tale of Ingeld and his first wife, the daughter of the Swedish earl, Swerting. The slave who stumbles onto the dragon's hoard is a fictionalisation of the slave, Tunni, who buried the hoard in the ground on the death of his master, and then fought against Egill over the control of it. The name 'Ongen -theow' means 'against-the-servant'. Ongentheow is a character who is equivalent to Egill.The Dragon is Onela. Beowulf is Bothvarr Bjarki. Grendel is Agnar, the child of Ingeld and his first wife (who is the daughter of Swerting). And Grendel's Mother is therefore the daughter of Swerting.The poet appears to have fashioned his story by inserting a couple of episodes (on Grendel and his Mum) into an originally-historical saga on Ingeld, and on Bjarki and Agnar.