Siggy Bjornsdottir was the daughter of Bjorn and Þorunn, the granddaughter of Ragnar and Lagertha. Bjorn named his daughter after Siggy, his uncle's ex-lover who sacrificed her life to save his half-brothers after they fell through a frozen lake.
Bjorn and his mother are thrilled with the child though Þorunn has fallen into a deep depression following the birth of her daughter and a battle which left her face scarred. She believes she is unable to care for her daughter and asks Aslaug to take her instead. Aslaug refuses and calls Þorunn selfish, though Þorunn eventually abandons her daughter in Kattegat with Aslaug.
Aslaug, still caring for Siggy, shows Bjorn his daughter though he also refuses to take Siggy, since she reminds him of Þorunn. Left with no other options, Aslaug promises Bjorn that she will take care of her.
Later, we see Siggy is mostly left to fend for herself. She plays with Sigurd who notices that she is very dirty, implying mistreatment and neglect. Although Siggy fears to leave the Great Hall, Sigurd insists, and Siggy is later found dead by Sigurd, lying in the mud in a stream below a bridge.
Sigurd mentions her death to both Aslaug and Ivar, who pay little attention. Aslaug is obviously drunk;. Siggy's death also doesn't seem to affect her father, Bjorn, either.
|Season three appearances|
|Mercenary||The Wanderer||Warrior's Fate||Scarred||The Usurper|
|Born Again||Paris||To the Gates!||Breaking Point||The Dead|
|Season four appearances|
|A Good Treason||Kill the Queen||Mercy||Yol||Promised|
|What Might Have Been||The Profit and the Loss||Portage||Death All 'Round||The Last Ship|
|The Outsider||The Vision||Two Journeys||In the Uncertain Hour Before the Morning||All His Angels|
|Crossings||The Great Army||Revenge||On the Eve||The Reckoning|