Chauncey Marvin Cady (May 16, 1824, Westport – June 16 1889, Ashville) was an American music publisher, businessman and composer. One of the most eminent men of the trade, his public service to Chicago was pivotal to the advancement of the city's music scene in the mid-19th century. Among the numerous roles of authority he held were as the first music teacher at Illinois State Normal University and the first conductor of the Chicago Musical Union.[1] He was a founder and partner of Root & Cady that dominated Civil War and early Reconstruction-era music publication.