William H. Hartwell
Late 19th Century
Hartwell was Professor of Music at Madison College, Sharon, Mississippi (school closed in 1872). William Hunnicutt, author of I’ll Rejoice, for which Hartwell wrote the music, taught at the same school.

http://www.hymntime.com/tch/bio/h/a/r/t/hartwell_wh.htm

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Well represented are works arranged by William H. Hartwell of the 16th Mississippi Volunteer Infantry Regimental Band, perhaps the best known of all the Confederate bandmasters. Hartwell’s band was described by members of the 26th North Carolina band as the best band in the Confederate army. They also asked Professor Hartwell for lessons, and were known to have received some training from him in 1863 and again in 1864. Arrangements by Hartwell included in this recording are the Southern Victorial March and John Hewitt’s Rock Me to Sleep, Mother. Hartwell’s own composition is represented by the Canary Bird Waltz.16

http://www.newworldrecords.org/liner_notes/80608.pdf