Sigar is a character in Hversum Noreg byggdist.

The "Ættartolur", the genealogies appended to the Hversu Noregr byggdist in the Flatey Book, introduce Halfdan the Old as the ruler of Ringiríki. He has nine sons, including Sigar:

"Their son was Halfdan the Old. And when he took the kingdom . . . .He married Alfny, daughter of King Eymund from Holmgard. They had nine sons. One was named Thengill, who was called Mannathengill, Raesi, Gram, Gylfi, Hilmir, Jofurr, Tiggi, Skyli, and Harri. These nine, it is said, were all of equal age, and were so exceptional, that in all accounts their names are held as honorable names, and king's names. It is said that none of them had children, and later they all fell in battle. But they had another nine sons. They were named Hildr, Naefill, Audi, Skelfi, Dag, Bragi, Budli, Lofdi, and Sigarr. Hildr, Sigarr and Lofdi were all warrior kings. Audi, Budli, and Naefill were sea-kings, and Dagr, Skelfi, and Bragi stayed on land."
"Sigarr was the father of Siggeir, who married Signy, the daughter of the king of the Volsungs. Sigarr was also the father of Sigmund, who married Hilda, daughter of Grjotgard, King of Maeri. His son was named Sigarr, father of Signy. He had Hagbard hanged. That is the dynasty of the Siklings."

Skáldskaparmál (Snorri Sturluson) gives the same list of nine sons: "the ninth, Sigar [Sigarr], whence come the Siklings: that is the house of Siggeir [Siggeirr], who was son-in-law of Völsung [V%C7%ABlsungr],—and the house of Sigar, who hanged Hagbard [Hagbar%C3%B0r]."

Sources

• http://www.germanicmythology.com/FORNALDARSAGAS/FraFornjotiHardman....
• http://www.norsesaga.no/hvorledes-norge-ble-bosatt.html

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Sigar is a character in Volsunga saga. See Sigar Halvdansson for the same character in Hversum Noreg Byggdist.

• https://en.wikipedia.org/wiki/V%C3%B6lsunga_saga
• http://www.norsesaga.no/hvorledes-norge-ble-bosatt.html