Ragnar Lodbrok, according to legends, was a Viking hero and a Swedish and Danish king.
Hemming I was a king in Denmark from 810 until his death. He was the successor of King Gudfred, his uncle.
Ivar Vidfamne was a semi-legendary king of Sweden, who originated in Scania. He apparently died circa 700 CE, in Karelia, at a place called Karjálabotnar, which may have been the modern Kurkiyoki, in Lakhdenpokhsky District of Russia.
Sigurd Ring according to legend was a king of the Swedes, being mentioned in many old Scandinavian sagas. According to these sources he was granted rulership over Sweden as a vassal king under his uncle Harald Wartooth. Later he would take up arms against his uncle Harald in a bid to overthrow him and take the crown of Denmark, a conflict which Sigurd eventually won after the legendary Battle of the Brávellir, where it is said that Odin himself intervened and killed Harald. In the Sagas, Sigurd is also known for being the father of the Norse Viking hero and legendary king of Denmark and Sweden, Ragnar Lodbrok. According to Bósa saga ok Herrauds, there was once a saga on Sigurd Ring, but this saga is now lost.
Harald Wartooth or Harold Hiltertooth was a semi-legendary king of Denmark who is mentioned in several traditional sources. He is held to have (indirectly) succeeded his father as king of Zealand and to have expanded his realm. According to different sources, he may have ruled over Jutland, part of Sweden and the historical northern German province of Wendland. He is said to have been finally defeated and killed at the legendary Battle of Bråvalla.
Randvér or Randver was a legendary Danish king. In Nordic legends, according to Sögubrot and the Lay of Hyndla, he was the son of Ráðbarðr the king of Garðaríki and Auðr the Deep-Minded, the daughter of the Danish-Swedish ruler Ivar Vidfamne. In these two sources, Auðr had Randver's brother, Harald Wartooth, in a previous marriage.
Sögubrot af nokkrum fornkonungum is a fragmentary Icelandic text dealing with some legendary Swedish and Danish kings. It is thought to be based on the lost Skjöldunga saga and perhaps represents a late state of that work.
Sigurd Snake-in-the-eye or Sigurd Áslaugsson was a semi-legendary Viking warrior and Danish king active from the mid to late 9th century. According to multiple saga sources and Scandinavian histories from the 12th century and later, he is one of the sons of the legendary Viking Ragnar Lodbrok and Áslaug. His historical prototype might have been the Danish King Sigfred who ruled briefly in the 870s. Norwegian kings' genealogies of the Middle Ages name him as an ancestor of Harald Fairhair and used his mother's supposed ancestry the Völsung to create an ancestry between Harald and his descendants and Odin.
Harthacnut or Cnut I was a semi-legendary King of Denmark. The old Norse story Ragnarssona þáttr makes Harthacnut son of the semi-mythic viking chieftain Sigurd Snake-in-the-Eye, himself one of the sons of the legendary Ragnar Lodbrok. The saga in turn makes Harthacnut the father of the historical king, Gorm. It has been suggested he is to be identified with the Hardegon of Northmannia whose early-10th century conquest of Denmark was related by Adam of Bremen.
Valdar was the name of several legendary Danish kings.
Sigurd Hart or Sigurd Hjort was a legendary king of Ringerike, during the late 9th or early 10th centuries. he is mentioned in Ragnarssona þáttr and in Halvdan Svartes saga.
Hrœrekr Ringslinger or Ringscatterer was a legendary 7th-century king of Zealand or Denmark, who appears in Chronicon Lethrense, Annals of Lund, Gesta Danorum, Sögubrot, Njáls saga, Hversu Noregr byggðist, Skjöldunga saga, and Bjarkarímur. Connection with such historical figures such as Horik I, who ruled Denmark around 854 for a dozen or so years, or the founder of the Rurik dynasty is fraught with difficulty.
Guðröðr was a legendary Scanian king who, according to the Ynglinga saga, was the brother of Halfdan the Valiant, Ivar Vidfamne's father. He is only known from late Icelandic sources dating from the 13th century.
Sigfred was an eighth century Danish king who is known to have reigned from before 777 to after 798. Fragments of his reign can be traced via Frankish sources.
Alfheim is an ancient name for an area corresponding to the modern Swedish province of Bohuslän.
Sigfred and Halfdan were two brothers who figured as Kings of the Danes in 873. Little is known about them; they are the last Danish rulers recorded by contemporary sources before the 930s.
Helge was a Danish king who ruled at the end of the 9th century. There is no contemporary evidence for his existence, since he is only mentioned in a source from the 11th century.
Sigfred was a competitor for the Danish throne in 812. His brief appearance inaugurated a period of throne struggles in Denmark which lasted until 827.
Anulo or Ale was a pretender-king who vied for the Danish throne in 812. He represents the appearance of the House of Harald which competed with the House of Gudfred for power in Denmark until c. 857 and possibly longer.
