The primary sources regarding Asgard come from the Prose Edda, written in the 13th century by Icelandic Snorri Sturluson, and the Poetic Edda, compiled in the 13th century from a basis of much older Skaldic poetry.

In the 12th century eddic prose Gylfaginning Snorri Sturluson relates it as the first of a series of abodes in heaven:

* Wikisource: Prose Edda / Gylfaginning ( The Fooling Of Gylfe ) by Sturluson, Snorri, 13th century Edda, in English.

The pair are attested in both the Poetic Edda, compiled in the 13th century from earlier traditional sources, and the Prose Edda, written in the 13th century by Snorri Sturluson.

Both Fundinn Noregr and Snorri Sturluson in Skáldskaparmál state that Ægir is the same as the sea-giant Hlér, who lives on the isle of Hlésey, and this is borne out by kennings.

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.

Eadgils was buried at Uppsala, according to Snorri Sturluson.

The bridge is attested as Bilröst in the Poetic Edda ; compiled in the 13th century from earlier traditional sources, and as Bifröst in the Prose Edda ; written in the 13th century by Snorri Sturluson, and in the poetry of skalds.

The Prose Edda by Snorri Sturluson.

Snorri Sturluson quoted this old poem in Skáldskaparmál, saying that because of this legend Heimdall is called " Seeker of Freyja's Necklace " ( Skáldskaparmál, section 8 ) and Loki is called " Thief of Brísingamen " ( Skáldskaparmál, section 16 ).

Snorri Sturluson writes in the Gylfaginning after describing Odin, Thor, and Baldr:

Snorri Sturluson clearly distinguishes the god Bragi from the mortal skald Bragi Boddason whom he often mentions separately.

In the Prose Edda Snorri Sturluson quotes many stanzas attributed to Bragi Boddason the old ( Bragi Boddason inn gamli ), a court poet who served several Swedish kings, Ragnar Lodbrok, Östen Beli and Björn at Hauge who reigned in the first half of the 9th century.

The Icelandic mythographer and historian Snorri Sturluson referred to dwarves ( dvergar ) as " dark-elves " ( dökkálfar ) or " black-elves " ( svartálfar ).

* Wikisource: Prose Edda / Gylfaginning ( The Fooling Of Gylfe ) by Sturluson, Snorri, 13th century Edda, in English.

" A third, proposed in 1895 by Eiríkr Magnússon, but since discredited, is that it derives from the Icelandic place name Oddi, site of the church and school where students, including Snorri Sturluson, were educated.

The derivation of the word " Edda " as the name of Snorri Sturluson ’ s treatise on poetry from the Latin " edo ", " I compose ( poetry )" by analogy with " kredda ", " superstition " from Latin " credo ", " creed " is now widely accepted.

It was written by the Icelandic scholar and historian Snorri Sturluson around 1220.

Fenrir is attested in the Poetic Edda, compiled in the 13th century from earlier traditional sources, and the Prose Edda and Heimskringla, written in the 13th century by Snorri Sturluson.

Freyja is attested in the Poetic Edda, compiled in the 13th century from earlier traditional sources ; in the Prose Edda and Heimskringla, both written by Snorri Sturluson in the 13th century ; in several Sagas of Icelanders ; in the short story Sörla þáttr ; in the poetry of skalds ; and into the modern age in Scandinavian folklore, as well as the name for Friday in many Germanic languages.

The problem is that in Old Norse mær means both " daughter " and " wife ," so it is not fully clear if Fjörgynn is Frigg's father or another name for her husband Odin, but Snorri Sturluson interprets the line as meaning Frigg is Fjörgynn's daughter ( Skáldskaparmál 27 ), and most modern translators of the Poetic Edda follow Snorri.

Frigg plays a major role in section 49 of the 13th century Prose Edda book Gylfaginning written by Snorri Sturluson, where a version of a story relating the death of Baldr is recorded by Snorri.

In the Ynglinga Saga of Snorri Sturluson the entire story is told as follows: " Othin had two brothers.

Huginn and Muninn are attested in the Poetic Edda, compiled in the 13th century from earlier traditional sources ; the Prose Edda and Heimskringla, written in the 13th century by Snorri Sturluson ; in the Third Grammatical Treatise, compiled in the 13th century by Óláfr Þórðarson ; and in the poetry of skalds.

Heimdallr is attested in the Poetic Edda, compiled in the 13th century from earlier traditional material ; in the Prose Edda and Heimskringla, both written in the 13th century by Snorri Sturluson ; in the poetry of skalds ; and on an Old Norse runic inscription found in England.

In the Heimskringla book Ynglinga saga, written in the 13th century by Snorri Sturluson, Hel is referred to, though never by name.

Loki is attested in the Poetic Edda, compiled in the 13th century from earlier traditional sources ; the Prose Edda and Heimskringla, written in the 13th century by Snorri Sturluson ; the Norwegian Rune Poems, in the poetry of skalds, and in Scandinavian folklore.

* Sturluson, Snorri, Heimskringla: History of the Kings of Norway, tr.

Njörðr is attested in the Poetic Edda, compiled in the 13th century from earlier traditional sources, the Prose Edda, written in the 13th century by Snorri Sturluson, in euhemerized form as a beloved mythological early king of Sweden in Heimskringla, also written by Snorri Sturluson in the 13th century, as one of three gods invoked in the 14th century Hauksbók ring oath, and in numerous Scandinavian place names.

It is attested in the Poetic Edda, compiled in the 13th century from earlier traditional sources, and in the Prose Edda and Heimskringla, both written in the 13th century by Snorri Sturluson.

Valhalla is attested in the Poetic Edda, compiled in the 13th century from earlier traditional sources, the Prose Edda, written in the 13th century by Snorri Sturluson, Heimskringla, also written in the 13th century by Snorri Sturluson, and in stanzas of an anonymous 10th century poem commemorating the death of a Eric Bloodaxe known as Eiríksmál as compiled in Fagrskinna.

The Heimskringla by Snorri Sturluson reports Harthacnut buried at Winchester, alongside Cnut and Harold Harefoot.

The Heimskringla of Snorri Sturluson claims that Svein and Harthacnut had agreed to share the kingdom between them.

The Heimskringla by Snorri Sturluson reports Harold Harefoot buried at Winchester, again alongside Cnut and Harthacnut.

Scholars disagree about the various, too often contradictory, accounts of his life given in sources from his era of history, such as the Anglo-Saxon Chronicle, Adam of Bremen's Gesta Hammaburgensis Ecclesiae Pontificum, and the Heimskringla, a 13th-century work by Icelandic author Snorri Sturluson.

Norse sources of the high medieval period, most prominently Snorri Sturluson's Heimskringla, also give a Polish princess as Cnut's mother, whom they call Gunhild and a daughter of Burislav, the king of Vindland.

Several historic works, known as the kings ' sagas were written in Norway and Iceland in the 12th and 13th centuries, the best known of which is Snorri Sturluson's Heimskringla ( c. 1220 ).

According to a legend recorded by Snorri Sturluson, in the Heimskringla, the late 9th-century Värmlandish chieftain Áki invited both the Norwegian king Harald Fairhair and the Swedish king Eric Eymundsson, but had the Norwegian king stay in the newly constructed and sumptuous one, because he was the youngest one of the kings and the one who had the greatest prospects.

The full list of sons according to Snorri Sturluson's Heimskringla.

Snorri Sturluson, in his Heimskringla, claims that Torgils was Harald's son.

The Icelandic sources, in particular Snorri Sturluson's Heimskringla, state that Sigurd, like Olaf's father, was a great-grandson of King Harald Fairhair in the male line.

These include the late 12th-century Norwegian synoptics – Historia Norwegiæ ( perhaps c. 1170 ), Theodoricus monachus ' Historia de antiquitate regum Norwagiensium ( c. 1180 ) and Ágrip af Nóregskonungasögum ( c. 1190 ) – and the later Icelandic kings ' sagas Orkneyinga saga ( c. 1200 ), Fagrskinna ( c. 1225 ), the Heimskringla ascribed to Snorri Sturluson ( c. 1230 ), Egils saga ( 1220 x 1240 ) and Óláfs saga Tryggvasonar en mesta ( c. 1300 ).

Snorri Sturluson gives an extensive account of Olaf in Heimskringla, ( c. 1230 ), using Oddr Snorrason's saga as his main source.

According to Snorri Sturluson's Heimskringla, he was named Magnus ( Magnús in Old Norse ) by Sigvatr Þórðarson, his father's Icelandic skald, after Charlemagne, Carolus Magnus in Latin.