In 1762, Charles-Alexis married the author Stéphanie Félicité (1746-1830); elected to the National Convention in 1792 as a member of the Girondins faction, he was executed with many of his colleagues in 1793.

In 1735, he was appointed French Ambassador to the Kingdom of Naples in 1735; lost in 1713 after the Treaty of Utrecht, Bourbon Spain regained it after the 1733 to 1735 War of the Polish Succession.

[5] This meant negotiations proceeded slowly, especially since the British envoy Lord Sandwich was instructed to delay, in the hope their position in Flanders would improve.

[8] The British Prime Minister Newcastle hoped the death of Philip V in July 1746 would tempt Spain to end their alliance with France, an assumption that proved incorrect.

[9] De Puisieux was withdrawn, allegedly for failing to reach agreement but it was only after their defeat at Lauffeld in July 1747 that Britain proved willing to negotiate seriously.