Benedict Eberhard Wilhelm Telemann

In Telemann's autobiography (1740) in Johann Mattheson's Grundlage eine Ehrenpforte (p. 367) you can read about this son:

Benedict Conrad Eibert; gebohren 1724. den 12. September;

I (Jan Enberg) think this is a mistake in the print by Mattheson or the printer as the next son is (quoted from the same page):

Ernst Conrad Eibert; gebohren 1726. den 8. April; gestorben 1727. den 10. Dec.

Benedict Eberhard Wilhelm completed an apprenticeship as a pharmacist at Telemanns own cousin Johann Conrad Warmholtz in Stockholm around 1739. (Warmhotz died in 1745 in Stockholm.) This is also confirmed in Telemann's autobiography (1740):

Lehrling bey meinem Vetter, Hr. Warmholtz, Apothekern in Stockholm.