Complex sentence: Princess Sigrid of Sweden or "Sigrid Eriksdotter Vasa" (b.15 October 1566 at Svartsjö Castle, Färingsö d.1633)--she was the daughter of king Eric XIV of Sweden and his mistress, the later Queen Karin Månsdotter.
Split into simpler sentences: Princess Sigrid of Sweden or "Sigrid Eriksdotter Vasa" (b.15 October 1566 at Svartsjö Castle, Färingsö d.1633), was a Swedish princess. She was the daughter of king Eric XIV of Sweden and his mistress, the later Queen Karin Månsdotter.