What is "yngvi"

thumb|upright=1.2|"Yngvi-Freyr builds the Uppsala temple" (1830) by Hugo Hamilton.

Old Norse Yngvi, Old High German Inguin and Old English Ingwine are names that relate to a theonym which appears to have been the older name for the god Freyr. Proto-Germanic *Ingwaz was the legendary ancestor of the Ingaevones, or more accurately Ingvaeones, and is also the reconstructed name of the Elder Futhark rune ᛝ, representing ŋ.

A torc, the so-called " Ring of Pietroassa", part of a late third to fourth century Gothic hoard discovered in Romania, is inscribed in much-damaged runes, one reading of which is gutanī [i(ng)]wi[n] hailag "to Ingwi[n] of the Goths holy".