Complex sentence: Gottlieb Theophil Muffat (April 1690--9 December 1770), son of Georg Muffat, served as "Hofscholar" under Johann Fux in Vienna from 1711 and was appointed to the position of third court organist at the "Hofkapelle" in 1717.
Split into simpler sentences: Gottlieb Theophil Muffat (April 1690--9 December 1770), son of Georg Muffat. He served as "Hofscholar" under Johann Fux in Vienna from 1711 and was appointed to the position of third court organist at the "Hofkapelle" in 1717.