Translated from <La Stratégie> (1878.08.15, v11 n8, p245):

<Obituary>

<Mr. Guibert>

<One of the best and most likeable chessplayers has just died; Mr. Guibert, who was attending the great International Tournament, was taken ill and died within a few days. He was, without a doubt, one of the strongest Parisian amateurs; his imaginative play was also very prompt, and his responses to his opponents' moves were never long in coming. Moreover, he was what one might call a good sport, modest in victory and able to bear defeat gracefully. His pleasant character, his quick and ingenious manner of playing made his game sought after, and the table where he sat was usually surrounded by a large audience.

He will be deeply missed by those who had the pleasure of knowing him.>

This appears to be <Armand-Jacques Guibert> (b. ca1802, Nantes, FRA - d. 1878.07.30 Paris, FRA). His birth year is estimated from his reported age at the time of his death. It is possible that he is the 'Armand-Jacques Guibert' born to Louis & Françoise Pauline (née Huard) Guibert on 1805.11.16 at Nantes (from the database 'France, Loire-Atlantique, Nantes, État-Civil, 1747-1907'). A record of his death date is available here: https://en.geneanet.org/archival-re....

From <Le Messager de Paris>, 1878.08.02, p1 (translated from the original French):

<We regret to learn of the death of Mr. Guibert, former president of the Chambre des Agréés of Paris, the honorable attorney of the House of Rothschild, with which he had been associated for nearly 30 years.

Mr. Guibert, who was a Knight of the Legion of Honor, administrator of 'L'Urbaine' and legal advisor to the Northern, Lombard, and Madrid-Saragossa railway companies, died last night at the age of 76. His funeral will likely take place on Monday; the gathering will take place at the funeral home, rue de la Pompe, at Passy.>