Olaf Tree Feller (Old Norse: Ólafr trételgja, Swedish: Olof Trätälja, Norwegian: Olav Tretelgja) was the son of the Swedish king Ingjald Ill-ruler of the House of Yngling according to Heimskringla. His mother was Gauthild, a princess of West Götaland, whose maternal grandfather was Olof the Sharp-sighted, the king of Nerike. Old Norse or Danish tongue is the Germanic language once spoken by the inhabitants of the Nordic countries (for instance during the Viking Age). ... Ingjald centralizing Sweden Ingjaldr inn illráði or Ingjald illråde (ill-ruler), ca 640 - ca 650, was a more or less historical Swedish king of the House of Ynglings. ... The Ynglings (Heimskringla), Scylfings (Beowulf) or Sons of Frey (Gesta Danorum and Ynglingatal) were the oldest known Scandinavian dynasty. ... Heimskringla is the Icelandic name of a collection of sagas recorded in Iceland around 1225 by the poet and historian Snorri Sturluson (1179-1242). ... The Icelandic sagas relate of a number of kings of Nerike who ruled during the mythological past of Scandinavia. ... Nericia, also Nerike or Närke, is a historical Province or landskap in middle Sweden. ...

His mother sent him to his foster-father Bove in West Götaland, where he grew up with his foster-brother Saxe who was surnamed Flette.

When Olof heard of his father's death, he assembled the men who were willing to follow him and went to his kinsmen in Nerike, because after his father's atrocities, the Swedes had grown hostile towards the Ynglings. Nericia, also Nerike or Närke, is a historical Province or landskap in middle Sweden. ... Old English Scylfing and Old Norse Skilfing (Skilfingr) is the name of a legendary genealogical lineage or clan. ...

When the Swedes learnt that Olof and his kin had sought refuge in Nerike, they were were attacked and had to head west through deep and mountainous forests (Kilsbergen) to lake Vänern and the estuary of Klarälven (where Karlstad is presently situated). Here, they settled and cleared land. Soon they had created a whole province called Värmland, where they could make good living. Kilsbergen (Wedge Mountains/Hills) or Lekebergsåsen (Ridge of Lekeberg) is a low mountainous ridge that separates Nerike from Wermelandia. ... Lake Vänern Vänern is the largest lake in Sweden, and the third largest lake in Europe, covering an area of 5,655 km². Its main tributary is Klarälven, which flows into the lake near the city of Karlstadt. ... Karlstad [kɑːɭstɑː(d)] is a City and Municipality in Värmland County, in mid-western Sweden. ... Wermelandia, or Värmland, is a historical province or landskap in the west of middle Sweden. ...

When the Swedes learnt that Olof was clearing land, they were amused and called him the Tree-feller. Olof married a woman named Solveig who was a daughter of Halfdan Guldtand of Soleyar. Olof and Solveigh had two sons, Ingjald Olofsson and Halfdan Hvitbeinn, who were brought up in Soleyar in the house of his mother's uncle Sölve. Solør is a Norwegian landscape consisting of the Glomma valley between Elverum in the north and Kongsvinger in the south. ... Ingjald Olofsson was the son of Olof Trätälja and became the king of Wermelandia after his death. ... Halfdan Hvitbeinn was the son of Olof Trätälja of the House of Yngling according to Heimskringla. ... Solør is a Norwegian landscape consisting of the Glomma valley between Elverum in the north and Kongsvinger in the south. ...

Because of king Ivar Vidfamne and his harsh rule many Swedes emigrated to Värmland, and they became so numerous that the province could not sustain them. The land was afflicted by famine of which the Swedes accused the king. It was an old tradition in Sweden of holding the king responsible for the wealth of the land (see Domalde). The Swedes accused Olof of neglecting his sacrifices to the gods and believed that this was the cause of the famine. Ívarr inn víðfaðmi or Ivar Vidfamne was, according to legend, a king of Sweden 655-695, Norway, Denmark, and parts of England. ... Wermelandia, or Värmland, is a historical province or landskap in the west of middle Sweden. ... Domalde was a Swedish king of the House of Ynglings, in Norse mythology. ...

The Swedish settlers thus rebelled against Olof, surrounded his house on the shores of lake Vänern and burnt him inside it. Thus he was sacrificed to Odin, like his ancestor Domalde. Lake Vänern Vänern is the largest lake in Sweden, and the third largest lake in Europe, covering an area of 5,655 km². Its main tributary is Klarälven, which flows into the lake near the city of Karlstadt. ... For other meanings of Odin and Wotan see Odin (disambiguation) Odin (Old Norse Óðinn, Swedish Oden) is usually considered the supreme god of Germanic and Norse mythology. ... Domalde was a Swedish king of the House of Ynglings, in Norse mythology. ...