Galadriel the Dwarf?

I was reading a book by Diana Wynne Jones (fantasy writer), Dark Lord of Derkholm, and there was a male dwarf named Galadriel! [img]smilies/eek.gif[/img] The book was published in 1998 so it was probably taken from J R R Tolkien's books. If anyone cares to check, it is first mentioned on page 357. I thought that was very odd!