The events described in the poem take place in the late 5th century, after the Angles and Saxons had begun their migration to England, and before the beginning of the 7th century, a time when the Anglo-Saxon people were either newly arrived or still in close contact with their Germanic kinsmen in Northern Germany and Scandinavia and possibly England. The poem may have been brought to England by people of Geatish origins. It has been suggested that Beowulf was first composed in the 7th century at Rendlesham in East Anglia, as the Sutton Hoo ship-burial also shows close connections with Scandinavia, and also that the East Anglian royal dynasty, the Wuffings, may have been descendants of Geatish Wulfings. Others have associated this poem with the court of King Alfred, or with the court of King Cnut.
The poem deals with legends, was composed for entertainment, and does not separate between fictional elements and real historic events, such as the raid by King Hygelac into Frisia. Scholars generally agree that many of the personalities of Beowulf also appear in Scandinavian sources (specific works designated in the following section). This does not only concern people (e.g., Healfdene, Hroðgar, Halga, Hroðulf, Eadgils and Ohthere), but also clans (e.g., Scyldings, Scylfings and Wulfings) and some of the events (e.g., the Battle on the Ice of Lake Vänern). The dating of the events in the poem has been confirmed by archaeological excavations of the barrows indicated by Snorri Sturluson and by Swedish tradition as the graves of Ohthere (dated to c. 530) and his son Eadgils (dated to c. 575) in Uppland, Sweden.
In Denmark, recent archaeological excavations at Lejre, where Scandinavian tradition located the seat of the Scyldings, i.e., Heorot, have revealed that a hall was built in the mid-6th century, exactly the time period of Beowulf. Three halls, each about 50 metres (164 feet) long, were found during the excavation.
The majority view appears to be that people such as King Hroðgar and the Scyldings in Beowulf are based on real historical people from 6th-century Scandinavia. Like the Finnesburg Fragment and several shorter surviving poems, Beowulf has consequently been used as a source of information about Scandinavian personalities such as Eadgils and Hygelac, and about continental Germanic personalities such as Offa, king of the continental Angles.
19th-century archeological evidence may confirm elements of the Beowulf story. Eadgils was buried at Uppsala, according to Snorri Sturluson. When Eadgils' mound (to the left in the photo) was excavated in 1874, the finds supported Beowulf and the sagas. They showed that a powerful man was buried in a large barrow, c 575, on a bear skin with two dogs and rich grave offerings. These remains include a Frankish sword adorned with gold and garnets and a tafl game with Roman pawns of ivory. He was dressed in a costly suit made of Frankish cloth with golden threads, and he wore a belt with a costly buckle. There were four cameos from the Middle East which were probably part of a casket. This would have been a burial fitting a king who was famous for his wealth in Old Norse sources. Ongenþeow's barrow (to the right in the photo) has not been excavated.