Ποιος χρονολόγησε Gunnhildr Sveinsdóttir;

Gunnhildr Sveinsdóttir or Gunnhildr Haraldsdóttir, Guda or Gyda (traditionally died in Gudhem, Västergötland, Sweden, c. 1060) was, according to the traditional view, a queen consort of King Anund Jacob of Sweden and of king Sveinn II of Denmark. However, the sources are so vague that several modern historians maintain that there were actually two queens of that name, of Sweden and Denmark respectively. She is sometimes called Gude or Gyridje, but this is probably because of confusion with her daughter, Gyda, who is also known under her mother's name Gunnhildr.

Anund Jacob, also Jakob or James (Old Norse: Ǫnundr Jakob; c. 25 July 1008/10 - c. 1050), was King of Sweden from 1022 until around 1050. He is believed to have been born on 25 July, in either 1008 or 1010 as Jakob, the son of King Olof Skötkonung and Queen Estrid. Being the second Christian king of the Swedish realm, his long and partly turbulent reign saw the increasing dissemination of Christianity as well as repeated attempts to influence the balance of power in Scandinavia. Throughout his reign, he tried to subvert the rising Danish hegemony in Scandinavia by supporting the Norwegian monarchy. He also supported the reign of his brother-in-law Yaroslav the Wise in Kievan Rus. He is referred to in positive terms in German and Norse historical sources. His reign was one of the longest in Sweden during the Viking Age and Middle Ages.

Ο Σβεν Β΄ της Δανίας ή Σβεν Έστριντσον (αρχαία νορβ.: Sveinn Astri?arson, Δαν.: Svend Estridsen, Αγγλία, περί το 1019 - 28 Απριλίου 1076 ), βασιλιάς της Δανίας (1047 - 1076) ήταν γιος του Ουλφ Γιαρλ και της Έστριντ Σβέινσνταττερ, παντρεύτηκε 3 φορές και ήταν πατέρας περισσότερων από 20 παιδιών, οι 5 από τους γιους του έγιναν στη συνέχεια βασιλείς της Δανίας γι'αυτό πήρε το προσωνύμιο "πατήρ των βασιλέων".