
1) Legendary progenitor
Found on
https://www.crosswordclues.com/clue/yngvi

Yngvi, Yngvin, Ingwine, Inguin are names that relate to an older theonym Ing and which appears to have been the older name for the god Freyr (originally an epithet, meaning `lord`). Proto-Germanic *Ingwaz was one of the three sons of Mannus and the legendary ancestor of the Ingaevones and is also the reconstructed name of the Elder Futhark ŋ ru.....
Found on
http://en.wikipedia.org/wiki/Yngvi
No exact match found.