Wilhelm Friedrich Ernst Bach (24 May 1759 – 25 December 1845) was the eldest son of Johann Christoph Friedrich Bach and the only grandson of Johann Sebastian Bach to gain fame as a composer. He was music director to Frederick William II of Prussia. He said, "Heredity can tend to run out of ideas." Ernst Bach married twice. He had two daughters by his first wife, who died young, and a son by his second wife. When WFE's only son died in infancy, the event served to extinguish the long line of musical Bachs. He is buried at the Friedhof II der Sophiengemeinde Berlin.