Henry of Prussia
In 1788 or 1789, some time after the death of landgrave Frederic II of Hesse, Kalkbrenner was named Kapellmeister of Frederika Louisa of Hesse-Darmstadt, Queen of Prussia. From 1790, Kalkbrenner served Prince Henry of Prussia at Rheinsberg castle in the same capacity. Henry of Prussia was the younger brother of Frederick II of Prussia.