Biography
Katherine Kennicott Davis (June 25, 1892 - April 20, 1980) was a composer, pianist, and author of the famous Christmas tune "The Little Drummer Boy" (originally titled "The Carol of the Drum"), in 1941.
Another famous hymn by Katherine Davis is the Thanksgiving hymn "Let All Things Now Living" which uses the melody of the traditional Welsh folk song The Ash Grove.
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http://en.wikipedia.org/wiki/Katherine_Kennicott_Davis
Biography text from Last.fm, available under CC BY-SA.