בְּנֵ֣י יֶ֔פֶת גֹּ֣מֶר וּמָג֔וֹג וּמָדַ֖י וְיָוָ֣ן וְתֻבָ֑ל וּמֶ֖שֶׁךְ וְתִירָֽס׃
Los hijos de Japhet: Gomer, y Magog, y Madai, y Javán, y Tubal, y Meshech, y Tiras.
Ramban on Genesis
THE SONS OF JAPHETH: GOMER. Scripture begins with Japheth for he was the oldest. After him, it mentions Ham [even though he was the youngest]263See Ramban above, 6:10. for Scripture wanted to delay the account of the generations of Shem in order to place side by side the two sections dealing with Shem’s children since it is important to dwell at length on the generations of Abraham.
Radak on Genesis
בני יפת גמר, according to Rabbeinu Saadyah gaon, he was the founder of the nation known as Altrach.