Charles Jean Marie Barbaroux
Charles Jean Marie Barbaroux (6 March 1767 – 25 June 1794) was a French politician of the Revolutionary period and Freemason.
Charles-Jean LeVavasseur
Charles- Jean LeVavasseur( born 1892, date of death unknown) was a French modern pentathlete.
He competed at the 1924 and 1928 Summer Olympics.
Charles-Jean-François Hénault
Charles- Jean -François Hénault( 8 February 1685 – 24 November 1770) was a French writer and historian.
André Popp
André Charles Jean Popp( 19 February 1924 – 10 May 2014) was a French composer, arranger and screenwriter.
Charles Grisart
Charles Jean Baptiste Grisart( 29 September 1837, Paris – 11 March 1904, Compiègne) was a French operatic composer.
Raimund Faltz
Raimund Faltz( 1658 -1703) was a medallist active in Germany.
Faltz was born in Stockholm, studied under medallist Charles- Jean- François Chéron in Paris, and in 1688 moved to Berlin where he made a large number of medals and reliefs until his death.
Pierre Surirey de Saint-Remy
Pierre Surirey de Saint- Remy( 1645- 1716) was a French general.
He followed a military career and from 1670 in the Royal Corps of Artillery.
Provincial Commissioner of Artillery in 1692, he is the author of" Mémoires d'artillerie", published for the first time in 1697.
He was named a lieutenant of the Grand maître de l'artillerie de France in 1703 and was a maréchal de camp.
He married Marie- Madeleine Hénault, the aunt of Charles- Jean- François Hénault, in 1672.
Henry Blackwood
Vice- Admiral Sir Henry Blackwood, 1st Baronet, GCH, KCB( 28 December 1770 – 17 December 1832), whose memorial is in Killyleagh Parish Church, was a British sailor.
Charles-Jean-Marie Alquier
Charles- Jean- Marie Alquier( 13 October 1752 – February 1826) was a French diplomat.
He served as French minister in several European capitals.
Eugène Godecharle
Eugène- Charles- Jean Godecharle( bapt. 15 January 1742 – 26 June 1798) was a Belgian violinist and composer.

Question: Do Charles-Jean-François Hénault and Henry Blackwood have the same nationality?
Answer: no