Genesis 10. All of us, living today, came from Japheth, Shem, and Ham.
It is an extensive subject, one that cannot be covered in a morning, but this may give you a place to begin your discoveries.
One may ask, “does it matter?” Absolutely it matters — if it didn’t matter it would not be in the Bible. Genealogy is a core part of the Bible: Genesis 10, 1 Chronicles 1, Luke 3, Matthew 1.
Many long books have been written tracing our ancestries back to these three men, and not all of them agree. But that’s OK — that does not mean it cannot be known, people are still looking.
Here are a few links I hope you may find useful, but there is so much more out there.
History of the Swedish People (Osterholm)
Table of Nations — Osterholm
Table of Nations — Wenstrom
See more at bloodandfaith.com