In
Norse mythology, Yngvi, alternatively spelled Yngve, was the progenitor of the
Yngling lineage, a legendary dynasty of
Swedish kings, from whom also the earliest historical
Norwegian kings claimed to be descended. Yngvi is a
name of the god Freyr, perhaps
Freyr's true name, as
freyr means 'lord' and has probably evolved from a common invocation of the god. In the
Íslendingabók (written in the early twelfth century by the Icelandic priest
Ari Þorgilsson)
Yngvi Tyrkja konungr 'Yngvi king of
Turkey' appears as the father of
Njörðr who in turn is the father of Yngvi-Freyr, ancestor of the Ynglings. According to the
Skjöldunga saga (a lost epic from 1180 to 1200, saved only partially in other sagas and later translation)
Odin came from Asia and conquered Northern Europe. He gave Sweden to his son Yngvi and Denmark to his son
Skjöldr. Since then the kings of Sweden were called Ynglings and those of Denmark
Skjöldungs. In the
Gesta Danorum (late twelfth century, by
Saxo Grammaticus) and in the
Ynglinga saga (ca. 1225, by
Snorri Sturluson), Freyr is euhemerized as a king of Sweden. In the
Ynglinga saga, Yngvi-Freyr reigned in succession to his father
Njörðr who had – in this variant – succeeded Odin. In the
Historia Norwegiæ (written around 1211), in contrast, Ingui is the first king of Sweden, and the father of a certain
Neorth, in his turn the father of
Froyr: "Rex itaque Ingui, quem primum Swethiæ monarchiam rexisse plurimi astruunt, genuit Neorth, qui vero genuit Froy; hos ambos tota illorum posteritas per longa sæcula ut deos venerati sunt. Froyr vero genuit Fiolni, qui in dolio medonis dimersus est […]" In the introduction to his
Edda (originally composed around 1220) Snorri Sturluson claimed again that Odin reigned in Sweden and relates: "Odin had with him one of his sons called Yngvi, who was king in Sweden after him; and those houses come from him that are named Ynglings." Snorri here does not identify Yngvi and Freyr, although Freyr occasionally appears elsewhere as a
son of Odin instead of a son of Njörðr. In the
Skáldskaparmál section of his
Prose Edda Snorri brings in the ancient king
Halfdan the Old who is the father of nine sons whose names are all words meaning "king" or "lord" in
Old Norse, as well as of nine other sons who are the forefathers of various royal lineages, including "Yngvi, from whom the Ynglings are descended". But rather oddly Snorri immediately follows this with information on what should be four other personages who were not sons of Halfdan but who also fathered dynasties, and names the first of these again as "Yngvi, from whom the Ynglings are descended". In the related account in the
Ættartolur "Genealogies" attached to
Hversu Noregr byggðist, the name
Skelfir appears instead of
Yngvi in the list of Halfdan's sons. The
Ynglinga Saga section of Snorri's
Heimskringla (around 1230) introduces a second Yngvi, son of
Alrekr, who is a descendant of Yngvi-Freyr and who shared the Swedish kingship with his brother Álf (
see Yngvi and Alf). ==Given names and family names==