Domar ruled the Swedes after his father, and times improved. Peace and good
seasons prevailed. Little else is known of his reign except that he died
in his bed at Uppsala, was transported to Fyrisvold, where his body was burned
on the river bank, and where his standing stone still remains.
Heimskringla, Ynglinga Saga, Section 19
In Norse mythology, the Swedish king Domar of the House of Ynglings was the son of Domalde. He was married to Drott, the sister of Dan the Arrogant who gave his names to the Danes. Drott and Dan are in this work said to be the children of Danp son of Ríg.
His rule lasted long and after the sacrifice of his father Domalde, the crops were plentiful and peace reigned. Consequently there is not much to tell about his reign, and when he died at Uppsala, he was transported over the Fyris Wolds (Fyrisvellir) and burnt on the banks of the river, where a stone was raised over his ashes.
http://en.wikipedia.org/wiki/Domar
Dyggi ruled the Swedes after his father, but little else is known.
Dygve's mother was Drott, a daughter of King Danp, the son of Rig, who was
first called "king" in the Danish tongue. His descendants always afterwards
considered the title of king the title of highest dignity. Dygve was the
first of his family to be called king, for his predecessors had been called
"Drottnar", and their wives "Drottningar", and their court "Drott". Each
of their race was called Yngve, or Yngune, and the whole race together Ynglinger.
The Queen Drott was a sister of King Dan Mikillati, from whom Denmark a took
its name.
Heimskringla, Ynglinga Saga, Section 20
Dygvi, Dyggve or Digne was according to Ynglingatal a Swedish king of the House of Ynglings. He died in bed and never reached Valhalla. Instead he went to Hel, Loki's daughter, who acquired a husband of royal blood. In Ynglinga saga, Snorri Sturluson included a piece from Ynglingatal composed in the 9th century. http://en.wikipedia.org/wiki/Dyggve