March 20, 1813, Ulm, Ger­ma­ny.

Oc­to­ber 13, 1875, Bos­ton, Mass­a­chu­setts.

Keller stu­died mu­sic train­ing in Stut­tgart and Vien­na, played vi­olin the Vi­en­nese Roy­al Cha­pel, and was an ar­my band­master for sev­er­al years. He moved to Amer­i­ca in 1846, where he played in the­a­ters in Phil­a­del­phia, Penn­syl­van­ia. He la­ter be­gan mak­ing vi­o­lins, and con­duc­ted op­e­ra in New York Ci­ty. His works in­clude:

• A Col­lec­tion of Po­ems, 1874

• Hughes, p. 456

1. American Hymn