Can you name all nine of Santa's reindeer? Can you do it (and spell them correctly) in two minutes or less? That's the challenge today in the mental_floss Lunchtime Quiz! Yes, I know one of them has a controversial spelling, but you can find the one that works. I got them in 30 seconds, and I would've done better if I could type. http://www.mentalfloss.com/blogs/archives/21168
PS: Of course, we know Santa really has a whole herd of reindeer.
In the original english translation it is Donder not Donner.
In the original Dutch it was even odder. It was Dunder and Blixem.
They also forgot Olive (the other reindeer) and (out with) Glee ;-)
And how many people were typing in "Blixem"? As that is the actual spelling used in the poem - very likely to help the awkward rhyme for "Vixen"
Donner and Blitzen means thunder and lightning in German. Donder or Dunder is Dutch, lightning in Dutch is Bliksem so it was probably the German that was originally used before Moore, ahem, published it.
Google: Charles Fenno Hoffman for more on the 7 year publishing gap.