The nephew of Count Vincent-Marie Viénot de Vaublanc, he began his professional career at the Council of State in Paris as an auditor.

In the aftermath of the July Revolution of 1830, he resigned from his position due to his legitimist beliefs, refusing to pledge allegiance to the newly crowned King Louis-Philippe I.

There, he formed a friendship with the crown prince, which led to his appointment as chamberlain and subsequently Grand Master (Oberhofmeister) of the household of the Queen of Bavaria, Marie of Hohenzollern.

He remained in this position for nearly thirty years, during which time he became one of the closest friends and advisors of Crown Prince Maximilian II, who subsequently became King of Bavaria.

Among his notable contributions to literature is a comprehensive account of medieval history titled La France au temps des croisades, which was published between 1844 and 1847.

He was the second son of Jean-Baptiste Bernard Viénot de Vaublanc, who at the time was serving as an army inspector under Napoleon, and Sophie Pion.

He was one of the inaugural six auditors at the Council of State, appointed in 1824 with the backing of his uncle, the elder brother of his late father, Vincent-Marie de Vaublanc,[1] a prominent ultra-royalist politician, former Minister of the Interior under Louis XVIII, and member of the Chamber of Deputies.

During a visit to the elite London circle of Almack's, the London Society provided the following description of him:[5] Shorter [than Prince Maximilian], the distinguished man with brown hair beside him is the Viscount de Vaublanc, the nephew of Charles X's minister and both friend and gentleman of the King Max's Chamber... De Vaublanc is a collector of antiquities, an author, an artist, cheerful and witty, but thoughtful and hard-working.

A man entered, rather young, with a pleasant face, around forty, dressed in black, with a white cross and a yellow ribbon at his buttonhole.

De Vaublanc, former chamberlain and former friend of the late King Louis, an old French émigré, who never learned to speak German, was described as "very amiable, very deaf, and very 18th century.

He regularly accompanied the king on evening walks, either on foot or by carriage, during which a topic related to political economy, art, or literature was introduced by the prince.

He was also responsible for the restoration plans for the Gothic castle of Hohenschwangau in Upper Bavaria, which served as the summer residence of the royal couple and later of the queen mother following the king's death.

From 1844 to 1847, following twelve years of research,[19] he published his magnum opus, La France au temps des croisades, in four volumes.

This modest volume, printed in a limited edition, will be preserved by inquisitive readers who may find a more vibrant portrayal of the Exhibition in these concise pages than in many technical works.