It is written in Genesis: "The sons of Japheth: Gomer, and Magog, and Madai, and Javan, and Tubal, and Meshech, and Tiras. and the sons of Gomer: Ashkenaz, and Riphath, and Togarmah. And the sons of Javan: Elishah, and Tarshish, Kittim, and Dodanim. By these were the Isles of the Gentile divided in their lands everyone after his tongue, after their families, in their nations." In the Bible, Japheth is ascribed seven sons and seven named grandsons:
Gomer
* Ashkenaz
* Riphath
* Togarmah
Magog
Madai
Javan
* Elishah
* Tarshish
* Kittim
* Dodanim
Tubal
Meshech
Tiras
The intended ethnic identity of these "descendants of Japheth" is not certain; however, over history, they have been identified by Biblical scholars with various historical nations who were deemed to be descendants of Japheth and his sons — a practice dating back at least to the classical encounters of Jew with Hellene, for example Josephus states in the Antiquities of the Jews, I.VI.122 that: Josephus detailed the nations supposed to have descended from the seven sons of Japheth.
An ancient, relatively obscure text known as Pseudo-Philo and thought to have been originally written ca. 70 AD, contains an expanded genealogy that is seemingly garbled from that of Genesis, and also different from the much later one found in Jasher:
Sons of Japheth: "Gomer, Magog, and Madai, Nidiazech, Tubal, Mocteras, Cenez, Riphath, and Thogorma, Elisa, Dessin, Cethin, Tudant."
*Sons of Gomer: Thelez, Lud, Deberlet.
*Sons of Magog: Cesse, Thipha, Pharuta, Ammiel, Phimei, Goloza, Samanach.
*Sons of Duden: Sallus, Phelucta Phallita.
*Sons of Tubal: Phanatonova, Eteva.
*Sons of Tyras: Maac, Tabel, Ballana, Samplameac, Elaz.
*Sons of Mellech: Amboradat, Urach, Bosara.
*Sons of Ascenez: Jubal, Zaraddana, Anac.
*Sons of Heri: Phuddet, Doad, Dephadzeat, Enoc.
*Sons of Togorma: Abiud, Saphath, Asapli, Zepthir.
*Sons of Elisa: Etzaac, Zenez, Mastisa, Rira.
*Sons of Zepti: Macziel, Temna, Aela, Phinon.
*Sons of Tessis: Meccul, Loon, Zelataban.
*Sons of Duodennin: Itheb, Beath, Phenech.
Later writers
Some of the nations that various later writers have attempted to described as Japhetites are listed below:
The "Book of Jasher", a midrash first printed in 1625, ostensibly based on an earlier edition of 1552, provides some new names for Japheth's grandchildren.
Gomer
Magog
Madai
Javan
Tubal
Meshech
Tiras
Anthropology
The term Caucasian as a racial label for Europeans derives in part from the assumption that the tribe of Japheth developed its distinctive racial characteristics in the Caucasus area, having migrated there from Mount Ararat before populating Europe. In the same vein, Georgian nationalist histories associated Japheth's sons with certain ancient tribes of the Caucasus area, called Tubals and Meshechs, who they claimed represented ancient pre-Indo-European and non-Semitic, possibly "Proto-Iberian", tribes of Asia Minor of the 3rd-1st millennia BC. This theory influenced the use of the term Japhetic in the linguistic theories of Nikolai Marr. During the eighteenth and nineteenth centuries, the Biblical statement attributed to Noah that "God shall enlarge Japheth" was used by some preachers as a justification for the "enlargement" of European territories through imperialism, which they interpreted as part of God's plan for the world. The subjugation of Africans was similarly justified by the curse of Ham.