Yngvar Harra (or Ingvar) Proto-Norse *Ingu-Hariz (d. early 7th century) was the son of Östen and reclaimed the Swedish throne for the House of Yngling after the Swedes had rebelled against Sölvi.

Snorri Sturluson relates in his Ynglinga saga that King Ingvar, Östen's son, was a great warrior who often spent time patrolling the shores of his kingdom fighting Danes and Estonian vikings (Víkingr frá Esthland). King Ingvar finally came to a peace agreement with the Danes and could take care of the Estonian vikings.

He consequently started pillaging in Estonia in retribution, and one summer he arrived at a place called Stein (see also Sveigder). The Estonians (sýslu kind) assembled a great army in the interior and attacked King Ingvar in a great battle. The Estonian forces were too powerful and Ingvar fell and the Swedish forces retreated. Ingvar was buried in a mound at a place called Stone or Hill fort (at Steini) on the shores of Estonia (Aðalsýsla).

Snorri then quotes a stanza from Þjóðólfr of Hvinir's Ynglingatal:

Þat stökk upp,
at Yngvari
Sýslu kind
um sóat hafði,
ok ljóshömum
við lagar hjarta
her Eistneskr
at hilmi vá,
ok austmarr
jöfri sœnskum
Gýmis ljóð
at gamni kveðr.
Certain it is the Estland foe
The fair-haired Swedish king laid low.
On Estland's strand, o'er Swedish graves,
The East Sea sings her song of waves;
King Yngvar's dirge is ocean's roar
Resounding on the rock-ribbed shore.

The Historia Norwegiæ presents a Latin summary of Ynglingatal, older than Snorri's quotation (continuing after Eysteinn):

Hujus filius Ynguar, qui cognominatus est canutus, in expeditione occisus est in quadam insula Baltici maris, quæ ab indigenis Eysysla vocatur. Iste ergo genuit Broutonund, quem Sigwardus frater suus .

His son Yngvar, nicknamed the Hoary, was killed by the inhabitants while campaigning on an island in the Baltic called Ösel. Yngvar bred Braut-Ånund, whose brother, Sigurd,

Ynglingatal only mentions the location Sysla (area paying tribute), Historia Norwegiae only mentions that he died during a campaign on the island Eycilla, i.e. Eysysla (Ösel). In addition to his son Anund (Broutonund), it also adds second son named Sigvard.

Thorsteins saga Víkingssonar skips Ingvar's generation and makes his father Östen the father of Anund and grandfather of Ingjald. It adds a second son to Östen named Olaf, who was the king of Fjordane in Norway.

Other articles related to "ingvar":

Ingvar Runestones
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Ingvar (name)
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Ragnvald Ingvarsson
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Ingvar Runestones - Södermanland - Sö 179
... says that it is raised in memory of Haraldr, the brother of Ingvar, and he is believed to have died in the region of the Caspian Sea ... why the runestone is raised only after Haraldr and not after Ingvar, and the most widely accepted explanation is that Tóla was only Harald's mother and that the two men were only half-brothers ... It is also possible that there were originally two stones of which one was in memory of Ingvar, but that Ingvar's stone has disappeared ...
Sweden At The 1932 Winter Olympics - Speed Skating
... Heat Final Time Position Time Position 1500 m Ingvar Lindberg n/a 6 Did not advance 5000m Ingvar Lindberg DNF – Did not advance 10,000 m Ingvar Lindberg DNF – Did not advance ...