Odds and Ends
2 10, 7:19am
I saw someone else in the comments mention Thorbjørn Egner as a possible Norwegian candidate as his works (such as "Karius og Baktus", "Klatremus og de andre dyrene i Hakkebakkeskogen", and "Folk og røvere i Kardemomme by") are pretty big in the other Scandinavian countries at least.
I'd also like to put forth Jostein Gaarder, who wrote Sophie's World. It's aimed at a slightly older demographic, but tweens and teens are technically children... I loved that book as a child (still do), and it was a great introduction on so many philosophers - so great that excerpts of it were used in my high school philosophy class.
"Sophie's World was originally written in Norwegian and became a best seller in Norway. It won the Deutscher Jugendliteraturpreis in 1994. The English version of the novel was published in 1995, and the book was reported to be the best-selling book in the world in that year. By 2011 the novel had been translated into fifty-nine languages, with over forty million copies in print." (from Wikipedia -