Johann Friedrich Bach [29] was son of Johann Christoph Bach [13]. After attending the University of Jena, he succeeded J.S. Bach [24] as organist of St Blasius's church in Mühlhausen in 1708. An organ fugue in G minor by him is extant (D-Bds).
Source: The New Grove Bach Family (Author: Christoph Wolff, MacMillan London, 1983)
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