According to Heimskringla sagas, in the year 967 the Norwegian Queen Astrid escaped with her son, in future king of Norway Olaf Tryggvason from her homeland to Novgorod, where her brother Sigurd held an honoured position at the court of Prince Vladimir. On their journey, "Eistland" (Oeselian?) Vikings raided the ship, killing some of the crew and taking others into slavery. Six years later, when Sigurd Eirikson traveled to "Eistland" to collect taxes on behalf of "Valdemar" (Vladimir), he spotted Olaf in a market in an unmentioned city and paid for his freedom.