http://www.germanicmythology.com/FORNALDARSAGAS/FraFornjotiHardman.html

Valdar, legendary Danish king.

Basics

Father: Hroar son of Halfdan
Son: Harald the Old
Sources

The Old Norse genealogy work Hversu Noregr byggdist tells that Hróarr had a son named Valdar, the father of Harald the Old, the father of Halfdan the Valiant, the father of Ivar Vidfamne, who was the maternal grandfather of Harald Wartooth. Harald fell at the Battle of the Brávellir against his nephew Sigurd Ring, a king of Sweden and the father of Ragnar Lodbrok.

Norwegian: "Harald den gamle, sønn av Valdar den gavmilde Hroarsønn, var gift med kong Heidreks datter, Hervor. Sønnen deres var Halfdan den rådkloke, far til Ivar den vidfadme, far til Aud den dyptenkte."

Icelandic: "Haraldr inn gamli, sonr Valdars ins milda Hróarssonar, átti Hervöru Heiðreksdóttur konungs. Þeira sonr var Hálfdan snjalli, faðir Ívars víðfaðma, föður Auðar innar djúpauðgu."

http://www.heimskringla.no/wiki/Hvorledes_Norge_ble_bosatt (in Norwegian)

This account is not about presenting the life of Hroðgar, but in presenting how Harald Fairhair was descended from kings and heroes in Scandinavian legend. The only reason for assuming that Hróarr is the same as Hroðgar, the Scylding, is the fact that only Hroðgar would be a personage of old so famous so as not to need any further identification than his name. However, the Skjöldunga saga tells that a Valdar disputed that Rörek, the cousin of Halga succeeded Hroðulf (Hrólfr Kraki) as the king of the Daner. After the war, Rörek took Zealand, while Valdar took Skåne. If based on the same tradition as Hversu Noregr byggdist, Valdar had the right to claim the throne being the son of the former king Hroðgar.

(Link to this version of the Skjoldunga saga needed)

Other stuff

Valdar Hroarsson (547-) [Pedigree]

Son of Hroar Halfdansson (526-) and Ogne (530-)

b. c. 547, Denmark
Married Hildis Princess of Vandals (-572)

Children:

1. Harold Valdarsson (568-)
Sources:

1. "Royalty for Commoners",

Roderick W. Stuart, 1992, 2nd edition. This book lists all of the known ancestors of John of Gaunt, which amounts to most of the Medieval royalty of Europe. Also see the following article: "A Mediaeval Miscellany: Commentaries on Roderick W. Stuart's Royalty for Commoners," The American Genealogist 69 (April 1994)
Valdar Hroarsson born Abt 0547 Denmark

father:

Hroar Halfdansson
born Abt 0526 Roskilde, Denmark

mother:

Ogne Princess of Northumberland
born Abt 0530 Northumberland married Abt 0546 Denmark (end of information)

siblings: Agner Hroarsson born Abt 0549 Denmark

Gift med
Hildis, född cirka 529 i Carthage, Nordafrika, död cirka 572 i Danmark. Prinsessa av Vandalerna.

Barn:
Harald "den gamle" Valdarsson, född cirka 568, död cirka 612