Ingwion was born either in Cuiviénen or Valinor during the Years of the Trees. When he and his kindred came to Aman they first dwelled in Tirion, but soon came to love the full light of the Two Trees and relocated to Valinor at the base of Taniquetil. Presumably, he lives there with his father probably right by his side. He went to Middle-earth with the Host of Valinor during War of Wrath capturing Eglarest in the first battle of the war.
He is one of a few other siblings and the cousin of Indis.
His name means "Son of Ingwë".