Question: What is the Old Norse name for the son of Cnut the Great, who lived in the House of Knýtlinga?

Context articles: Guðrøðr
House of Knýtlinga
Knútsdrápa (Óttarr svarti)
Finn (given name)
Rognvald
Tormod
Torquil
Megingjörð
Einar
Svein Knutsson

Guðrøðr is a masculine Old Norse personal name.
 The name is rendered in Old Irish and Middle Irish as "Gofraid" or "Gofraidh" (later "Goraidh" in Scottish Gaelic).
 An Anglicised forms of the Old Norse name are "Godred", "Guthred", and "Guthfrith", Latinised as "Godredus".
The Danish House of Knýtlinga (English: "House of Cnut's Descendants") was a ruling royal house in Middle Age Scandinavia and England.
 Its most famous king was Cnut the Great, who gave his name to this dynasty.
 Other notable members were Cnut's father Sweyn Forkbeard, grandfather Harald Bluetooth, and sons Harthacnut, Harold Harefoot, and Svein Knutsson.
 It has also been called the House of Canute, the House of Denmark, the House of Gorm, or the Jelling Dynasty.
The Knútsdrápa by the skald Óttarr svarti (Óttar the Black) is one of the Old Norse poems composed for King Cnut. "
Knútsdrápur" (plural of "Knútsdrápa") are Old Norse skaldic compositions in the form of "drápur" which were recited for the praise of Cnut.
 Most of Óttarr's poem is cited in the "Knýtlinga saga", while one stanza is known only from other sources such as the "Heimskringla".
 It has been debated whether strophe 9 truly belongs to Óttarr's "Knútsdrápa" or to a poem which Óttarr composed for Cnut's father Svein Haraldsson.
Finn is generally regarded as a masculine given name.
 The name has several origins.
 In some cases it is derived from the Old Norse personal name and byname "Finnr", meaning "Lapp" or "Finn".
 In some cases the Old Norse name was a short form of other names composed with this element.
 In other cases, the name "Finn" is derived from Irish, meaning "white" or "fair".
 In the later case, the name is an earlier Irish variant of "Fionn".
Ragnvald or Rognvald is an Old Norse name (Old Norse "Rǫgnvaldr", modern Icelandic "Rögnvaldur"; in Old English "Rægnald" and in Old Irish, Middle Irish "Ragnall").
 Notable people with the name include:
Tormod is a masculine Norwegian and Scottish Gaelic given name, derived from the Old Norse personal name "Þórmóðr".
 This Old Norse name is composed of two elements: "Þorr", meaning "Thor", the Norse god of thunder; and "móðr", meaning "mind", "courage".
 A variant of the Norwegian name is "Thormod".
 An Anglicised form of the Scottish Gaelic name is "Norman".
Torquil is an Anglicised form of the Norwegian and Swedish masculine name "Torkel", and the Scottish Gaelic name Torcall.
 The Scottish Gaelic name "Torcall" is a Gaelicised form of the Old Norse name "Þorkell".
 The Scandinavian "Torkel" is a contracted form of the Old Norse "Þorkell".
 This Old Norse name is made up of the two elements: "Þór", meaning "Thor" the Norse god of thunder; and "kell" (in some variants "ketill"), meaning "(sacrificial) cauldron".
In Norse mythology, the megingjörð (meaning "power-belt" in Old Norse) is a belt worn by the god Thor.
 The Old Norse name megin means power or strength, and gjörð means belt.
Einar is a given name deriving from the Old Norse name Einarr, which according to Guðbrandur Vigfússon is directly connected with the concept of the einherjar, warriors who died in battle and ascended to Valhalla in Norse mythology.
 Vigfússon comments that 'the name Einarr is properly = einheri" and points to a relation to the term with the Old Norse common nouns "einarðr" (meaning "bold") and "einörð" (meaning "valour") .
Svein Knutsson (Old Norse: "Sveinn Knútsson") c. 1016–1035, was the son of Cnut the Great, king of Denmark, Norway, and England, and his first wife Ælfgifu of Northampton, a Mercian noblewoman.
 In 1017 Cnut married Emma of Normandy, but there is no evidence that Ælfgifu was repudiated, and in 1030 Cnut sent her and Svein as regents to rule Norway.
 However, their rule was considered oppressive by the Norwegians, and they were expelled in 1034.
 They imposed new taxes and harsh laws that made them unpopular.
 In William Shakespeare's "Macbeth", there is a character called "Sweno, the Norways' king" based on Svein.