In the great conflict of the period between Napoleon I and the Bourbons, Berryer, like his father, was an ardent Legitimist.

In the spring of 1815, at the opening of the campaign of the Hundred Days, he followed Louis XVIII of France to Ghent as a volunteer.

[2] Berryer stood forward with a noble resolution to maintain the freedom of the press, and he severely censured the rigorous measures of the police department.

After the revolution of July, when the Legitimists withdrew in a body, Berryer alone retained his seat as deputy.

He advocated trial by jury in press prosecutions, the extension of municipal franchises, and other liberal measures.

Her purpose was to organize an insurrection in favour of her son, the Duke of Bordeaux, who has since become known as the Comte de Chambord.

[2] Among the more noteworthy events of his subsequent career were his defence of Louis Napoleon after the ridiculous affair of Boulogne in 1840, and a visit to England in December 1843 for the purpose of formally acknowledging the pretender Henri, comte de Chambord who was then living in London as "Henry V" and lawful king of France.