The traditional view of Sigurd Halvdansson 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 Rise. Doubt has been cast on his connection with Sigurd Rise, a relatively obscure son of Harald Fairhair by a Sami girl named Snæfrithr Svásadottir.[1] Sigurd Syr's father Halfdan may not have been King Harald's grandson Halfdan of Hadafylke.[2] There are no contemporary attestations of such a Halfdan.[3] It is not very likely that this lineage represent historical realities. Many modern historians regard the Fairhair genealogy as in large part invented.[4]
According to Heimskringla, Sigurd Syr was a prudent man, taciturn and generally modest, although very wealthy. He was known as a good caretaker of his property, personally involved in managing it, and wise and peaceful. He may well have owned several large farms.[5] His nickname "Syr" can be translated as meaning "sow or swine" (related to Old Norse svīn). The reason for this is unknown; P.A. Munch suggested that it was because his attention was so focused on farming and that his nickname meant "One who digs or roots in the soil of the field". Since Sigurd was a respected man of high birth, the epithet was most probably an honorable title. He was also promised the throne of England and his son Harald went to get it for him when he died.[6][7]
Sigurd Syr was baptized into the Christian faith in 998. According to the Heimskringla, "King Olaf Tryggvason came to Ringerike to spread Christianity, Sigurd Syr and his wife allowed themselves to be baptized".[8][1]
Sigurd Syr was not personally politically ambitious. He was not fond of the pomp and ceremony of nobility, but played his expected part. He fully supported his stepson Olaf's ambitions to leadership and command. In 1014, he successfully petitioned his peers, the other Norwegian local kings, for their support in his stepson's cause when Olav wanted to build an army in Norway.[9]
Family
According to the sagas, Sigurd Syr and his wife Åsta Gudbrandsdatter were good and noble rulers[10] and had the following children together:
Guttorm
Gunnhild - married Ketil Kalv of Ringnes in Stange
Halfdan
Ingerid - married Nevstein, mother of Tore, foster-father of King Magnus Barefoot
Harald Hardrada - King of Norway from 1046 to 1066, sometimes called 'the last great Viking'[11]
^M. Sjöström, "Scandinavian medieval descendants of Charlemagne: A detailed genealogy of the issue of Agnes Haakonsdottir, of the so-called Fairhair dynasty", Foundations - Journal of the Foundation for Medieval Genealogy vol 2 (2007:4, July), pp. 253-76: "It is very likely that the lord Halvdan, father of kinglet Sigurd Syr, was not identical with a possible Halvdan in Hadafylke, grandson of king Harald".
^Knut Helle, Cambridge History of Scandinavia, Volume I, Prehistory to 1520, Cambridge University Press, 2003, ISBN0-521-47299-7, p. 191.
^See Joan Turville-Petre, "The Genealogist and History: Ari to Snorri", Saga-Book 20 (1978-81), pp. 7-23 (pdf), especially p. 15: "[Harald Fairhair's] successors Óláfr Tryggvason, Óláfr helgi and the Norwegian kings descended from Haraldr harðráði [e]ach . . . represented a separate line, which had to be connected to Haraldr: as he was their political forerunner, so also he must be their common ancestor".
^Heimskringla ed. Hollander, St. Óláf's Saga ch. 33, p. 268.
^Sigwart Sörensen, Norway, New York: Collier, 1899, OCLC 474863147, pp. 79-80.
^Margolis, Nadia. "Aasta of Norway (Late 10th Century-early 11th Century)." Women in the Middle Ages: An Encyclopedia. Eds. Katharina M. Wilson and Nadia Margolis. Santa Barbara: ABC-CLIO, 2004. Credo Reference. Web. 8 Mar. 2016.
^Krag, Claus. "Harald 3 Hardråde". Norsk biografisk leksikon (in Norwegian). Retrieved 9 March 2016.