(from the article `punctuation`) ...of all the western European languages stems from the practice of the great Italian and French printers of the 15th and 16th centuries, national ... Found on http://www.britannica.com/eb/a-z/g/80
Guillemets (t, or eɪ; lang), also called angle quotes or French quotation marks, are polylines pointed like arrows (« or »), sometimes forming a complementary set of punctuation marks used as a form of quotation mark. The symbol at either end—double « and » or single ‹ and ›—is a guillemet. They are used in a number of languages to in... Found on http://en.wikipedia.org/wiki/Guillemet