Yngvi and his descendants appear in Ynglinga Saga, and Yngvi is also in Snorri Sturluson's Prose Edda.
From this point there's both a historical chain and the mythical personages that go along with them. Odin had five children that he sent to be kings in various places: Skjold, Saeming, Siggi, Veggdegg, and Balder - they were installed to rule (respectively) Denmark, Norway, France, East Saxony and Westphalia. Yngvi was to be King of Sweden following Odin. The Prose Edda describes Odin leaving Turkland generations after the fall of Troy and traveling north to Saxland (Saxony). According to the Prose Edda, the following previous generations lived in and around Turkland.)

Woden was son of Frithuwald (Bor/Voden) and Beltsea, born about 215 in Asgard, Asia or East Europe,
Frithuwald (Bor/Voden) was son of Freothalaf, born about 190 in Asgard, Asia or East Europe,
Freothaf was son of Finn, born about 160 in Asgard, Asia or East Europe,
Finn was son of Flocwald, born about 130 in Asgard, Asia or East Europe,
Flocwald was son of Godwulf, born about 100 AD in Asgard, Asia or East Europe,
Godwulf (Gudolfr) was son of Geata, born about 80 AD in Asgard, Asia or East Europe,
Geata (Jat) was son of Taetwa,
Taetwa was son of Beaw,
Beaw (Bjaf) was son of Sceldwa,
Sceldwa was son of Sceaf,
Sceaf (Skjold) was son of Heremod,
Heremod was son of Itermon,
Itermon was son of Hathra,
Hathra was son of Hwala,
Hwala was son of Bedwig,
Bedwig was son of Seskef,
Seskef was son of Magi,
Magi was son of Moda,
Moda was son of Vingener,
Vingener was son of Vingethorr,
Vingethorr was son of Eiaridi,
Eiaridi was son of Ridi Hloritha,
Ridi Hloritha (Loridi) was son of Thor, King of Thrace, and Sif,
Thor (Tror), King of Thrace, was son of Troan and Memnon,
Troan was daughter of Priam, King of Troy, and Hecuba,
Priam was son of Laomedon and Strymo, born in Troy,
Laomedon was son of Ilus, King of Troy, and Eurydice,
Ilus (Ilos) was son of Tros,
Tros was son of Erichthonius, King of Troy, and Astyoche,
Erichthonius was son of Dardanus, Founder of Troy, born about 1374 B.C in Troy,
Dardanus was son of Zerah and Electra, born in Rameses, Goshen, Egypt,
Zerah was son of Judas (Judah), King of Goshen, and Tamar, born in Hebron, Canaan, Palestine,
Judas was son of Jacob and Leah, born in Hebron, Canaan, Palestine,
Jacob was son of Isaac and Rebekah, born about 1886 BC in Haran, Padan-aram,
Isaac was son of Abraham and Sarah, born about 1922 BC in Haran, Padan-aram,
Abraham was son of Thara (Terah), King of Agade, and Maria, born about 2046 BC in Ur, Chaldea,
Thara was son of Nachor, born about 2122 BC in Ur, Chaldea,
Nachor was son of Saruch, King of Ur and Agade, and Melka, born about 2152 BC in Ur, Chaldea,
Saruch was son of Ragau (Reu), born about 2181 BC in Ur, Chaldea
Ragau was son of Phalec (Peleg), King of Babylon, born about 2213 BC in Salem(Jerusalem), Cannan,
Phalec was born 2244 BC in Salem(Jerusalem), Canaan. He died 2004 BC in Salem.