Pierer's Lexikon, a German-language reference book (circa 1890) states as follows : Japhet(h) ( Hebrew , meaning spread out over far distance- enlargement), was the third son of Noah. Japhet(h) is considered the father from whom descend the Medes (Medians), Armenians, Greeks, Celts, Germans, and Slavs . All these people are called Japhet(h)ites. An article in a Swiss publication Uni-Press # 104 from April 2000 is named "The Rebirth of Cartography ( Die Wiedergeburt der Kartographie) 500 years ago". It shows a reprint of a first "world map" of 1472 identifying people of the world under Noah's sons S(h)em in Asia , Ham in Africa , Japhet(h) in Europe.
Outside link : Uni-Press, Bern Switzerland: http://publicrelations.unibe.ch/unipress/heft104/beitrag10.html from booklet 104 April 2000