Jean-Henri Claude Mangin was a French magistrate (7 March 1786 Metz- 1835). He was head of the Paris police at the time of the Trois Glorieuses.

Biography

Procurer general of the royal court of Poitiers

Poitiers

Poitiers is a city on the Clain river in west central France. It is a commune and the capital of the Vienne department and of the Poitou-Charentes region. The centre is picturesque and its streets are interesting for predominant remains of historical architecture, especially from the Romanesque...

, he was named Prefecture of Police

Prefecture of Police

The Prefecture of Police , headed by the Prefect of Police , is an agency of the Government of France which provides the police force for the city of Paris and the surrounding three suburban départements of Hauts-de-Seine, Seine-Saint-Denis, and Val-de-Marne...

 of Paris on 13 August 1829.

Due to the coup of Charles X

Charles X of France

Charles X was known for most of his life as the Comte d'Artois before he reigned as King of France and of Navarre from 16 September 1824 until 2 August 1830. A younger brother to Kings Louis XVI and Louis XVIII, he supported the latter in exile and eventually succeeded him...

 and the Prince of Polignac

Jules, prince de Polignac

Prince Jules de Polignac, 3rd Duke of Polignac , was a French statesman. He played a part in ultra-royalist reaction after the Revolution...

 in July 1830, he stated that "what we did was right, Paris didn't move, and it responded at its head.". On 27 July 1830, he ordered the seizure of four presses of journalists who, contrary to the July Ordinances

July Ordinances

July Ordinances, also known as the Four Ordinances of Saint-Cloud, were a series of decrees set forth by Charles X and Jules Armand de Polignac, the chief minister, in July 1830....

, were publishing without authorisation. This was the signal for the typographers revolt which set about the 1830 revolution.