Legend says that Estrid of the Obrotrites was taken back to Sweden from a war in the West Slavic area of Mecklenburg as a war-prize.

She was most likely given by her father, a tribal chief of the Polabian Obotrites, as a peace offering in a marriage to seal the peace with King Olof Skötkonung, and she is thought to have brought with her a great dowry, as a great Slavic influence is represented in Sweden from her time, mainly among craftsmen.

Her husband also has a mistress, Edla, who comes from the same area in Europe as herself, and who was possibly taken to Sweden at the same time.

The king treats Edla and Estrid the same way and has given his son and his two daughters with Edla the same privileges as the children he has with Estrid, though it was Estrid he had married and made Queen.

Queen Estrid is baptized with her husband, their children and large numbers of the Swedish royal court in 1008, when the Swedish royal family converts to Christianity, although the king promises to respect the freedom of religion—Sweden is not to be Christian until the last religious war between Inge the Elder and Blot-Sweyn of 1084-1088.

A new had war erupted between Norway and Sweden when Olaf II of Norway reestablished the Norwegian kingdom.

Many men in both Sweden and Norway try to reconcile the kings.

Olof's cousin, the earl of Västergötland, Ragnvald Ulfsson and the Norwegian king's emissaries Björn Stallare and Hjalti Skeggiason had arrived in 1018 at the thing of Uppsala in an attempt to sway the Swedish king to accept peace and as a warrant marry his daughter Ingegerd Olofsdotter to the king of Norway.

The Swedish king had been greatly angered and threatened to banish Ragnvald from his kingdom, but Ragnvald was supported by his foster-father Thorgny Lawspeaker.

Thorgny had delivered a powerful speech in which he reminded the king of the great Viking expeditions in the East that predecessors such as Erik Anundsson and Björn had undertaken, without having the hubris not to listen to their men's advice.

Thorgny himself had taken part in many successful pillaging expeditions with Olof's father Eric the Victorious and even Eric had listened to his men.

The present king wants nothing but Norway, which no Swedish king before him had desired.

This displeases the Swedish people, who are eager to follow the king on new ventures in the East to win back the kingdoms that paid tribute to his ancestors, but it is the wish of the people that the king make peace with the king of Norway and give him his daughter Ingegerd as queen.

Thorgny had finished his speech by saying: if you do not desire to do so, we shall assault you and kill you and not brook any more of your warmongering and obstinacy.

Our ancestors have done so, who at Mula thing threw five kings in a well, kings who were too arrogant as you are against us.

Olof, however, in 1019 instead marries his daughter Ingegerd-Irene to the powerful Yaroslav I the Wise .

An impending war is settled when Olof agrees to share his power with his son Anund Jacob.

Olof is also forced to accept a settlement with Olaf II of Norway at Kungahälla, who already had been married (unbeknownst to Olof) with Olof's daughter, Astrid, through the Geatish jarl Ragnvald Ulfsson.

The death of Olof Skötkonung is said to have taken place in the winter of 1021–1022.

According to a legend, he was martyred at Stockholm after refusing to sacrifice to pagan gods.