Possibly an Old Norsecognate of ING. This was an alternate name of the god Freyr, who as Yngvi-Freyr was regarded as the ancestor of the Swedish royal family.
From the Germanic *Ingwaz, possibly meaning "ancestor". This was the name of an obscure old Germanic fertility god who was considered the ancestor of the tribe the Ingaevones. It is possible he was an earlier incarnation of the god Freyr.
