The word " Bluetooth " is an anglicised version of the Scandinavian Blåtand / Blåtann, the epithet of the tenth-century king Harald I of Denmark and parts of Norway who united dissonant Danish tribes into a single kingdom.

The idea of this name was proposed by Jim Kardach who developed a system that would allow cell phones to communicate with computers ( at the time he was reading Frans Gunnar Bengtsson's historical novel The Long Ships about Vikings and king Harald Bluetooth ).

# REDIRECT Harald Bluetooth

Sweyn's father, Harald Bluetooth, was the first of the Scandinavian kings to officially accept Christianity, in the early or mid-960s.

In some of the old sources, such as the Jómsvíkinga saga, Sweyn appears as an illegitimate son of Harald Bluetooth, raised by the legendary Jomsviking and jarl of Jomsborg, Palnatoke.

Harald Bluetooth, Gorm's son and Cnut's grandfather, was the Danish king at the time of the Christianization of Denmark.

Otto the Great also forced the king and his heir apparent Harald Bluetooth to convert to Christianity.

Harald " Bluetooth " Gormsson (, ) ( probably born c. 935 ) was the son of King Gorm the Old and of Thyra Dannebod.

The biography of Harald Bluetooth is summed up by this runic inscription from the Jelling stones:

Bluetooth logo with runes H and B, meaning of Harald Bluetooth

* Poul Anderson's novel The Mother of the Kings is mainly concerned with the Norwegian King Erik Bloodaxe and his family, but a section takes place in Denmark, with a depiction of the young and ambitious Harald Bluetooth ruthlessly playing off various factions and Viking leaders against each other.

Queen Margrethe II can trace her lineage back to the Viking kings Gorm the Old and Harald Bluetooth from this time, making the Danish Royal Family the oldest in the world.

The Danes were united and officially Christianized in 965 AD by Harald Bluetooth ( see below ), the story of which is recorded on the Jelling stones.

Between c. 960 and the early 980s, Harald Bluetooth appears to have established a kingdom in the lands of the Danes which stretched from Jutland to Skåne.

# REDIRECT Harald Bluetooth

In 961, their uncle King Harald Bluetooth of Denmark traveled to Norway and declared Harald Greycloak to be his vassal king in Norway.

Harald soon became less dependent on support from Harald Bluetooth.

With the death of Harald Greycloak, King Harald Bluetooth won back power over Norway and he supported Haakon Sigurdsson as his vassal king.

In the 19th century, a case had also been made for Harald Bluetooth King of Denmark ( d. 983 ) as being Eric's true father.

After his father's death in 954, Harald and his brothers allied with their grandfather, King Harald Gormson, against King Haakon I of Norway.

* Heaven Earth ( 2008 ), directed by Rudolf Amaral and Harald Scherz.

The end of the Viking Age is traditionally marked in England by the failed invasion attempted by the Norwegian king Harald III ( Haraldr Harðráði ), who was defeated by Saxon King Harold Godwinson in 1066 at the Battle of Stamford Bridge ; in Ireland, the capture of Dublin by Strongbow and his Hiberno-Norman forces in 1171 ; and 1263 in Scotland by the defeat of King Hákon Hákonarson at the Battle of Largs by troops loyal to Alexander III.

* Harald Klak ( Harald Halfdansson ), a 9th c. king in Jutland who made peace with Louis the Pious in order to win Frankish support in his struggle for power.

Harald I of Norway is known to have had a body of Úlfhednar ( wolf coated ), which are mentioned in Vatnsdœla saga, Haraldskvæði, and the Völsunga saga resemble some werewolf legends.

** King Harald III of Norway ( Harald Hardrada ) ( b. 1015 ),

* Canute the Great becomes king of Denmark ( or 1019 ), succeeding Harald II.

Magnus I of Norway ( reigned 1035 – 1047 ), who wasn't a warlord, had reigned for more than a decade when his uncle Harald Hardrada ( reigned 1047 – 1066 ) challenged his rule.

* In The Long Ships or Red Orm ( original title: Röde Orm ), a best-selling Swedish novel written by Frans Gunnar Bengtsson, the plot takes place some decades later-a large part of it in the court of the aging Harald, shortly before the outbreak of the rebellion of his son Swen.

Harald Fairhair or Harald Finehair ( Old Norse: Haraldr hárfagri, Norwegian: Harald Hårfagre ), ( c. 850 – c. 932 ), son of Halfdan the Black, was the first king ( 872 – 930 ) of Norway.

* Raffensperger, Christian, " Shared ( Hi ) Stories: Vladimir of Rus ' and Harald Fairhair of Norway ," The Russian Review, 68, 4 ( 2009 ), 569-582.

The traditional explanation for the exodus from Norway is that people were fleeing the harsh rule of the Norwegian king Haraldur Hárfagri ( Harald the Fair-haired ), whom medieval literary sources credit with the unification of some parts of modern Norway during this period.

Olav and Märtha had three children: Ragnhild ( 1930-2012 ), Astrid ( b. 1932 ) and Harald ( b. 1937 ), who was to become king in 1991.

The others are Norway's Stein Eriksen, Borghild Niskin, Inger Bjørnbakken, Astrid Sandvik, King Olav V ( his son ), Erik Håker, Jacob Vaage, King Harald V ( his paternal grandson ), and Queen Sonja ( his paternal granddaughter-in-law ), and Sweden's Ingemar Stenmark.

* 1080 – King of Denmark Harald III dies and is succeeded by Canute IV, who would later be the first Dane to be canonized.

It was initially established by a public consisting largely of recent immigrants from Norway who had fled the unification of that country under King Harald Fairhair.

In this vintage manipulated image, Goebbels ' stepson Harald Quandt ( who was absent due to military duty ) was added to the group portrait.

In 1066, King Harald Hardråde of Norway invaded England, only to be defeated by Harold Godwinson, who in turn was defeated by William of Normandy, descendant of the Viking Rollo, who had accepted Normandy as a fief from the Frankish King.

The Icelandic Commonwealth was established in 930 AD by refugees from Norway who had fled the unification of that country under King Harald Fairhair.

14th century Flateyjarbók image of Harald I of Norway | Harald Hårfagre, who took control of Hjaltland ca 875.

The goalkeeper Harald Schumacher who played for 1.

Another possible contributing factor is that Harald I of Norway (" Harald Fairhair ") had united Norway around this time, and the bulk of the Vikings were displaced warriors who had been driven out of his kingdom and who had nowhere to go.

The most eminent Scandinavian to serve in the Varangian Guard was Harald Hardrada, who subsequently established himself as king of Norway ( 1047 – 66 ).

* Harald Fairhair, remembered in the medieval sagas and thus commonly revered in popular histories as the first king of all Norway, who conquered and ruled the whole extent of medieval Norway from 870 – 930.

King Harald Hardrada of Norway also had a claim to the throne as the uncle and heir of King Magnus I, who had made a pact with Harthacnut in about 1040 that if either Magnus or Harthacnut died without heirs, the other would succeed.

On the same day Harald Hardrada of Norway, who also claimed the English crown joined Tostig and invaded, landing his fleet at the mouth of the Tyne.