The Bluetooth logo is a bind rune merging the Younger Futhark runes 8px ( Hagall ) ( ᚼ ) and 8px ( Bjarkan ) ( ᛒ ), Harald's initials.

Adam of Bremen's claim regarding Otto I and Harald appears to have been inspired by an attempt to manufacture a historical reason for the archbishops of Hamburg-Bremen to claim jurisdiction over Denmark ( and thus the rest of Scandinavia ); in the 1070s, the Danish King was in Rome asking for Denmark to have its own arch-bishop, and Adam's account of Harald's supposed conversion ( and baptism of both him and his " little son " Sweyn, with Otto serving as Sweyn's godfather ) is followed by the unambiguous claim that " At that time Denmark on this side of the sea, which is called Jutland by the inhabitants, was divided into three dioceses and subjected to the bishopric of Hamburg.

The extent of Harald's Danish Kingdom is unknown, although it is reasonable to believe that it stretched from the defensive line of Dannevirke, including the Viking city of Hedeby, across Jutland, the Danish isles and into southern present day Sweden ; Scania and perhaps Halland and Blekinge.

The yellow areas are petty kingdoms assigned to Harald's sons and kinsmen, the red area remained Harald's territory as High King, the purple is the domain of the earls of Lade, orange is the domain the earls of Møre .</ center >

Harald's death at Stamford Bridge, which brought an end to his invasion, is often recorded as the end of the Viking Age.

One of Egill's lausavísur speaks of an encounter in England with a man of “ Harald's line ” ( Haralds áttar ), while the Arinbjarnarkviða envisages a ruler at York ( Jórvik ) who is a descendant of Halfdán ( Halfdanar ) and of the Yngling dynasty ( ynglings burar ).

The possibility that Harald had married a Danish princess may find some support in a skaldic stanza which is usually assigned to Þorbjörn Hornklofi's Hrafnsmál, a eulogy on Harald's deeds in the form of a conversation between a raven and valkyrie.

The dominant theme of the sagas about Harald's numerous sons is the struggle for the Norwegian throne, in particular the way it manifests itself in the careers of Haakon and his foil Eric.

Earl Rognvald is killed by Harald's son Halfdan Hålegg.

In Sögubrot af nokkrum fornkonungum, Sigurd is the paternal nephew of the Danish king Harald Wartooth, and presumably ( the part of Sögubrot where this would have been narrated expressly has not been preserved ) the son of Randver, who in his turn is the son of Harald's mother Auðr the Deep-Minded and her husband king Raðbarðr of Gardariki.

However, this is an error in this saga, because Harald's age was in the late 9th century, while the first Norse settlers reached the Faroes after 825.

Orm, having learned that Harald's daughter Ylva is staying in London, agrees to be baptised, and Poppo, former bishop of Harald, joins them in Christian matrimony.

However, this is an error in this saga, because Harald's age was in the late 9th century, while the first Norse settlers reached the Faroes after 825.

The traditional view of Sigurd Syr's pedigree, as presented in various Icelandic poems and historical sagas culminating in Snorri Sturluson's Heimskringla, is that he was a great-grandson of King Harald Fairhair, through Harald's son Sigurd Hrise.

This story is retold in the Eyrbyggja saga but here it is Ketill rather than Harald who led the expedition, and after the initial victory the former retained the islands as " personal domain " rather than bringing them under Harald's rule.

In the Laxdaela saga the same story is told, but here Ketill is one of the vikings who have fled to the Isles to escape Harald's tyranny.

Adam of Bremen, writing 100 years after King Harald's death in " History of the Archbishops of Hamburg-Bremen ", finished in 1076, tells a story of Harald being forcibly converted by Otto I, after a defeat in battle.

As noted above, Harald's father, Gorm the Old had died in 958, and had been buried in a mound with many goods, after the pagan practice.

However, Harald's favour at the imperial court quickly declined after the death of Michael IV in December 1041, which was followed by conflicts between new emperor Michael V and the powerful empress Zoe.

Although the second ship was destroyed by the famous Byzantine cross-strait iron chains, Harald's ship sailed safely into the Black Sea after successfully maneuvering over the barrier.

Generally held to date from Magnus and Harald's short co-rule, depicting Magnus who had precedence, but also speculated as Harald's alone, with Magnus as an epithet adopted after his death.

This alliance came apart after Harald's death.

The day after the battle he sought out King Harald's body and put it onto a funeral pyre along with his horse.

Each year, all of the companies in the battalion took part in a competition, consisting of sports and military skills tests, to win the right to be named ' King Harald's Company ', after the regiment's Colonel-in-Chief.

Turville-Petre speaks of a " decisive reconstruction of Harald's ancestry probably carried out by Icelanders, some two hundred years after his time " which made Halfdan the Black the progenitor of a dynasty which stretched in three branches from Harald Fairhair to Olaf Tryggvason, Olav II and Harald.

Follett brings home the point by having the RAF, using the information which Harald and Karen brought at such high price, set out to bomb Hamburg-where Harald's beloved Jewish aunt and cousin live, who used to come over to merry holidays at Harald's parents ' home.

As a consequence of Harald's army having lost to the Germans at the Danevirke in 974, he no longer had control of Norway, and Germans settled back into the border area between Scandinavia and Germany.

However, distance and a lack of common interests prevented a lasting union, and Harald's son Cnut the Great barely maintained the link between the two countries, which completely broke up during the reign of his son Hardecanute.

According to Adam of Bremen, an 11th-century historian, Harald's son Sweyn was baptised Otto, in tribute to the German king Otto I, who was the first Holy Roman Emperor.

Otto II attacked Harald's forces, but the joint Danish-Norwegian army repealed the German army.

In Autumn, however, when the Norwegian allies sailed north to return to Norway, Otto II was able to counter Harald's advances at the Danevirke.

Harald's kingdom ( in red ) and his vassals and allies ( in pink ), as set forth in Heimskringla, Knytlinga Saga, and other medieval Scandinavian sources.

After Harald's death, the unity of the kingdom was not preserved, and for the next century, the kingdom was variously ruled, wholly or in part, by descendants of King Harald or by earls under the suzerainty of Denmark.

It describes life at Harald's court, mentions that he took a Danish wife, and that he won a battle at Hafrsfjord.

According to this view, Iceland was settled by " malcontents " from Norway, who resented Harald's claim of rights of taxation over lands, which the possessors appear to have previously held in absolute ownership.

The latter part of Harald's reign was disturbed by the strife of his many sons.

While the various sagas name anywhere from 11 to 20 sons of Harald in various contexts, the contemporary skaldic poem Hákonarmál says that Harald's son Haakon only would meet " eight brothers " when arriving to Valhalla.

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

Harald's wife Elisiv of Kiev, daughter of Yaroslav the Wise.

However, in Harald's absence, the throne of Norway had been restored to Magnus the Good, an illegitimate son of Olaf.

Since Magnus had few men, the city fell easily to Harald's army on January 7, 1135.