Question: Which legendary danish King had a clan called Skjöldungs?

Context articles: Hrólfr Kraki
Heremod
Halfdan
Fróði
Gefjon
Bjarkamál
Heorot
Hrothgar
Hrólfs saga kraka
Skofnung

Hrólfr Kraki, "Hroðulf", "Rolfo", "Roluo", "Rolf Krage" (early 6th century) was a legendary Danish king who appears in both Anglo-Saxon and Scandinavian tradition.
 His name would in his own language (Proto-Norse) have been *"Hrōþiwulfaz" (famous wolf).
Heremod (Proto-Norse: *"Harimōdaz" , Latin form: Heremodius) is a legendary Danish king and a legendary king of the Angles who would have lived in the 2nd century and known through a short account of his exile in the Old English poem "Beowulf" and from appearances in some genealogies as the father of Scyld.
 He may be the same as one of the personages named Hermóðr in Old Norse sources.
 Heremod may also be identical to Lother (Latin Lotherus) in Saxo Grammaticus' "Gesta Danorum" (Book 1) or the same history may have been applied to two originally separate figures.
Halfdan (Old Norse: "Halfdan" , Old English: "Healfdene" , Medieval , Proto-Norse: "*Halbadaniz", "half Dane") was a late 5th and early 6th century legendary Danish king of the Scylding (Skjöldung) lineage, the son of king named Fróði in many accounts, noted mainly as the father to the two kings who succeeded him in the rule of Denmark, kings named Hroðgar and Halga in the Old English poem "Beowulf" and named Hróar and Helgi in Old Norse accounts.
Fróði (Old Norse: "Frōði" ; Old English: "Frōda" ; Middle High German: "Vruote") is the name of a number of legendary Danish kings in various texts including "Beowulf", Snorri Sturluson's "Prose Edda" and his "Ynglinga saga", Saxo Grammaticus' "Gesta Danorum", and the "Grottasöngr".
 A Danish king by this name also appears as a minor character in the Middle High German epic "Die Rabenschlacht".
 The name is possibly an eponym for the god Freyr.
In Norse mythology, Gefjon (alternatively spelled Gefion or Gefjun) is a goddess associated with ploughing, the Danish island of Zealand, the legendary Swedish king Gylfi, the legendary Danish king Skjöldr, foreknowledge, and virginity.
 Gefjon is attested in the "Poetic Edda", compiled in the 13th century from earlier traditional sources; the "Prose Edda" and "Heimskringla", written in the 13th century by Snorri Sturluson; in the works of skalds; and appears as a gloss for various Greco-Roman goddesses in some Old Norse translations of Latin works.
Bjarkamál (Bjarkemål in modern Norwegian and Danish) is an Old Norse poem from around the year 1000.
 Only a few lines have survived in the Icelandic version, the rest is known from Saxo's version in Latin.
 The latter consists of 298 hexameters, and tells the tale of Rolf Krake's downfall at Lejre on the isle of Sjælland, described in a dialogue between two of Rolf Krake's twelve berserkers, Bodvar Bjarke (hence the name of the poem), the most famous warrior at the court of the legendary Danish king Rolf Krake, and Hjalte (= hilt).
 The poem opens with Hjalte waking up his fellow berserkers, having realized they are under attack.
 In 1030, King Olav had the bard Tormod Kolbrunarskald recite the "Bjarkamál" to rouse his outnumbered army in the morning before the start of the Battle of Stiklestad, according to "Fóstbrœðra saga".
Heorot ( ), also Herot, is a mead-hall described in the Anglo-Saxon epic "Beowulf" as "the foremost of halls under heaven."
 It served as a palace for King Hroðgar, a legendary Danish king of the sixth century.
 "Heorot" means "Hall of the Hart" (male deer).
 The Geatish hero Beowulf defends the royal hall and its residents from the demonic Grendel.
Hrothgar (Old English: "Hrōðgār" ] ; ) was a legendary Danish king living in the early 6th century.
Hrólfs saga kraka, the "Saga of King Hrolf Kraki", is a late legendary saga on the adventures of Hrólfr Kraki and his clan, the Skjöldungs.
 The events can be dated to the late 5th century and the 6th century.
 A precursor text may have dated to the 13th century, but the saga in the form that survived to this day dates to ca. 1400.
 44 manuscripts survive, but the oldest one of them is from the 17th century, although a manuscript is known to have existed c. 1461 at the monastery of Möðruvellir in Iceland.
Skofnung was the sword of legendary Danish king Hrólf Kraki.
 "The best of all swords that have been carried in northern lands", it was renowned for supernatural sharpness and hardness, as well as for being imbued with the spirits of the king's 12 faithful berserker bodyguards.
 A cut by the Skofnung sword spreads until it rips the person apart.
 the only way to stop this is by touching the cut with the skofnung stone.