Background
Charles August was the second son of John Ernst of Nassau-Weilburg and Maria Polyxena of Leiningen-Dagsburg-Hartenburg. He succeeded his father as Prince in Weilburg on 27 February 1719.
Charles August was the second son of John Ernst of Nassau-Weilburg and Maria Polyxena of Leiningen-Dagsburg-Hartenburg. He succeeded his father as Prince in Weilburg on 27 February 1719.
In his youth, he worked as a diplomat for Saxony. Foreign a while he was the Saxon ambassador in Paris. In 1733 and 1734, he commanded the imperial troops on the Rhine as an imperial cavalry general.
In 1688 the family had not, however, obtained a seat on the princely bench in the Imperial Diet, and in protest, they had not used their title.
In 1737, the seat in the diet was finally awarded and Charles August started using his princely title.