Marie Hippolyte de Gueulluy, 2nd Marquis of Rumigny (1784-1871) was a French Peer and diplomat.
[1] His brother was Marie-Théodore Gueilly, vicomte de Rumigny a famous French general, and Aide-de-camp of king Louis Philippe I and his sister was married to viscount Pierre Charles Dejean.
He married Caroline Mortier de Trévise, daughter of Edouard Mortier, Duke of Treviso and had three daughters: In 1805 he entered the French service of foreign diplomacy and became a close confidant of the King.
[3] He was Ambassador of the French king in Brussels and succeeded Louis Sérurier.
[4] He did retire after the French revolution of 1848 in Brussels, where he died at high age.