Etymology and origins of the character
A number of origins have been proposed for the name Beowulf.
Henry Sweet, a philologist and early linguist specializing in Germanic languages, proposed that the name Beowulf literally means in Old English "bee-wolf" or "bee-hunter" and that it is a kenning for "bear". This etymology is mirrored in recorded instances of similar names. Biuuuwulf is recorded as a name in the AD 1031 Liber Vitae. The name is attested to a monk from Durham and literally means bee wolf in Northumbrian. The 11th century English Domesday Book contains a recorded instance of the name Beulf. A scholar named Sarrazin also suggested that the name Beowulf was derived from a mistranslation of Böðvarr where -varr was interpreted as vargr meaning "wolf". However, this etymology was questioned by Sophus Bugge, who instead suggested that the personage Böðvarr Bjarki was derived from Beowulf.
In 2005, Andy Orchard theorized an etymology on the basis of the common Old Norse name Þórólfr (which literally translates to "Thor Wolf"), stating in parallel that a "more likely" meaning for the name would be the "wolf" of the Germanic god Beow.
English philologist Walter William Skeat proposed an etymological origin in a term for "Woodpecker" citing the Old Dutch term biewolf for the bird. Skeat states that the black woodpecker is common in Norway and Sweden and further reasons that the "indominatable nature" and that the "bird fights to the death" could have potentially influenced the choice of the name. This etymological origin has been criticized as not being in accordance to Grimm's law and Skeat may have recanted the proposal at a later date.
Beado-Wulf (war wolf)
The editors of Bosworth's monumental dictionary of Anglo-Saxon propose that Beowulf is a variant of beado-wulf meaning "war wolf" and that it is cognate with the Icelandic Bodulfr which also means "war wolf".
Beowulf before Beowulf
Scholars have long debated about the origins of the character Beowulf. Some have believed that Beowulf existed in heroic-legendary tradition prior to the composition of Beowulf, while others have believed that the Beowulf poet invented his Geatish protagonist. In 2013, Leonard Neidorf argued that Beowulf was present in heroic-legendary cycles before Beowulf was composed. Neidorf argued that the usage of the name ‘Biuuulf’ (Beowulf) in the seventh century suggests that legends of Beowulf existed well before the composition of our extant poem. 
Origins in Geatland
As told in the surviving epic poem, Beowulf was the son of Ecgtheow, a warrior of the Swedish Wægmundings. Ecgþeow had slain Heaðolaf, a man from another clan named the Wulfings (according to Scandinavian sources, they were the ruling dynasty of the Geatish petty kingdom of Östergötland). Apparently, because the victim was from a prominent family the weregild was set too high, and so Ecgþeow was banished and had to seek refuge among the Danes. The Danish king Hroðgar generously paid the weregild, and had Ecgþeow swear an oath.
Ecgþeow was in the service of the Geatish king Hreðel, whose daughter he married. They had Beowulf, who grew up with the Geats. Beowulf's childhood friend was Breca the Bronding "supposed to be the inhabitants of the island Brännö, lying off the coast of West Gothland in the Cattegat". This would be a realistic location for a childhood friend of Beowulf, and the poem describes a swimming contest between them.
Zealand and Grendel
When king Hroðgar, his wife Wealhþeow, and his court were terrorized by the monstrous Grendel, Beowulf left Geatland (West Götaland) and sailed to Zealand with fourteen warriors in order to pay his father's debt. During the night, Grendel arrived to attack the sleeping men. Beowulf attacked him without his sword and tore the arm off the beast. Grendel returned to the bog to die and his arm was attached to the wall of Heorot. The next day, Beowulf was lauded and a skald (scop) sang and compared Beowulf with the hero Sigmund.
However, during the following night Grendel's Mother arrived to avenge the death of Grendel and collect weregild. As Beowulf slept in a different building he could not stop her. He resolved to descend into the bog in order to kill her. They fought beside Grendel's corpse, and Beowulf finally won with the aid of an enchanted giant sword stolen from the lair's plunder.
Return to Geatland, Kingdom, and Death
Having returned to Geatland, Beowulf took part in a historic raid against the Franks with his king Higlac. Higlac died during the raid, and Beowulf swam home in full armour. Back in Geatland, queen Hygd offered Beowulf the throne but Beowulf declined in favour of the young prince Heardred. However, Heardred received two Swedish princes, Eadgils and Eanmund who reported that they had fled their uncle Onela who had usurped the Swedish throne. This led to a Swedish invasion in which Heardred was killed. Beowulf was proclaimed king and decided to avenge Heardred and to help Eadgils become king of Sweden.
The event when Onela was slain was probably a historic event. Even though it is only briefly mentioned in Beowulf, it occurs extensively in several Scandinavian sources where it is called the Battle on the Ice of Lake Vänern. For example, Snorri Sturluson wrote:
Onela rode Raven, as they rode to the ice, but a second one, a grey one, hastened, wounded by spears, eastwards under Eadgils. [...] In this fight Onela died and a great many of his people. Then king Eadgils took from him his helmet Battle-boar and his horse Raven.
(Although, in Snorri's text the names are in their corresponding Old Norse forms).
Beowulf ruled the Geats for 51 years, until his realm was terrorized by a dragon whose treasure had been stolen from his hoard in a burial mound. He attacked the dragon with his thegns, but they did not succeed. Beowulf decided to follow the dragon into its lair, at Earnanæs, but only his young Swedish relative Wiglaf dared join him. Beowulf finally slew the dragon by cutting him in half with a seax, but was mortally wounded by being stabbed with the poisonous horn of the dragon and was carried out by Wiglaf. He was buried in a barrow by the sea.
- Sweet, Henry. (1884) Anglo-Saxon Reader in Prose and Verse The Clarendon Press, page 202.
- Chadwick, Hector Munro (1983) The Origin of the English Nation, page 294. ISBN 0-941694-09-7
- The Relation of the Hrolfs Saga Kraka and the Bjarkarimur to Beowulf by Olson, 1916, at Project Gutenberg.
- Orchard, Andy. (2003) A Critical Companion to Beowulf ISBN 1-84384-029-4
- Skaet, Walter William. (1877) "The Name Beowulf" from The Academy 24 February 1877, page 163.
- Shippey, Tom A. Beowulf: The Critical Heritage Page 387-388. ISBN 0-415-02970-8
- The Anglo-Saxon Dictionary, the posthumous dictionary by Joseph Bosworth (1898), see beorne - Beó-wulf.
- Neidorf, Leonard. "Beowulf before Beowulf: Anglo-Saxon Anthroponymy and Heroic Legend." Review of English Studies 64 (2013): 553-73
- The Anglo-Saxon Dictionary, the posthumous dictionary by Joseph Bosworth (1898), see bróc - brot.
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