Which legendary danish King had a clan called Skjöldungs?
Hrólfs saga kraka 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.
Harald III of Denmark Harald III (Harald the Whetstone, Danish: "Harald Hen" ;  1040 – April 17, 1080) was King of Denmark from 1076 to 1080. Harald III was an illegitimate son of Danish king Sweyn II Estridsson, and contested the crown with some of his brothers. He was a peaceful ruler who initiated a number of reforms. Harald was married to his cousin Margareta Hasbjörnsdatter, but did not leave any heirs, and was succeeded by his brother Canute IV the Saint. Four of his half-brothers were in turn crowned Danish kings.