Conversation so far:
What did François-René de Chateaubriand restore?
Chateaubriand rallied to the Bourbons.
On 30 March 1814, he wrote a pamphlet against Napoleon, titled De Buonaparte et des Bourbons, of which thousands of copies were published.
What other significance did he have during these years?
After Napoleon's defeat, Chateaubriand became peer of France and state minister (1815).

Question: Did he hold any other important offices?
Self-contained rewrite: In addition to peer of France and State Minister, did Francois-Rene de Chateaubriand hold any other important offices?