Johann Philipp Kirnberger

Johann Philipp Kirnberger was a musician, composer (primarily of fugues) and music theorist. He studied the organ with Johann Peter Kellner and Heinrich Nicolaus Gerber, and starting in 1738 he studied with the violinist Meil in Sondershausen, but most significant is the time he spent from 1739 until 1741 (with breaks) studying performance and composition with Johann Sebastian Bach.

Between 1741 and 1751 Kirnberger lived and worked in Poland for powerful magnates including Lubomirski, Poninski, and Rzewuski before ending up at the Benedictine Cloister in Lviv (then part of Poland). He spent much time collecting Polish national dances and compiled them in his treatise Die Charaktere der Tänze. Kirnberger played a significant role in the intellectual and cultural exchange between Germany and Poland in the mid-18th century.

Read more at https://en.wikipedia.org/wiki/Johann_Kirnberger