- Minister Plenipotentiary (France)
Appointed: September 14, 1778
Presentation of Credentials: March 23, 1779
Termination of Mission: Superseded May 17, 1785
- Also commissioned to negotiate a treaty with Sweden.
- Minister Plenipotentiary (Sweden)
Appointed: September 28, 1782
- Also accredited to France; did not proceed to Stockholm, but negotiated a treaty with Sweden which was signed at Paris, Apr 3, 1783.