born Jan. 14, 1800, Stein, near Krems, Austria
died June 3, 1877, Vienna
Austrian scholar and musicologist.
After gaining a law degree, he tutored children of wealthy families and traveled, researching books on a number of different topics, including botany, mineralogy, and music. He is best known for his 1862 thematic catalog of Mozart's works (which are still identified by their "K numbers"), a monument of music scholarship. He also edited Ludwig van Beethoven 's letters.