Question: Who was a member of French Parliament that inspired a political group founded by George Valois and Édouard Berth?

full_context: Document 1: Stephen Pearl Andrews: Stephen Pearl Andrews (March 22, 1812 – May 21, 1886) was an American individualist anarchist, linguist, political philosopher, outspoken abolitionist, and author of several books on the labor movement and Individualist anarchism.
Document 2: Kreisau Circle: The Kreisau Circle (German: "Kreisauer Kreis") (1940–1944) was a group of about twenty-five German dissidents led by Helmuth James Graf von Moltke, who met at his estate in the rural town of Kreisau, Silesia. The circle was composed of men and a few women from a variety of backgrounds, including those of noble descent, devout Protestants and Catholics, professionals, socialists, and conservatives. Despite their differences, the members of the Kreisau Circle found common interest in their opposition to Hitler's Nazi regime on both moral and religious grounds. At their meetings, the circle discussed how they would reorganize the German government after the end of the Third Reich. Although the circle did not promote violent overthrow of the regime, their planning was considered by the Nazis to be treasonous as it rested on the assumption that Germany would lose the war. The group began to falter after Helmuth von Moltke was arrested by the Gestapo in January 1944 and eventually came to an end when most of its members were arrested following Claus von Stauffenberg's attempt on Hitler's life on July 20, 1944.
Document 3: Mutualism (economic theory): Mutualism is an economic theory and anarchist school of thought that advocates a society where each person might possess a means of production, either individually or in purely voluntary collectives, with trade representing equivalent amounts of labor in the free market. Integral to the scheme is the establishment of a mutual-credit bank that would lend to producers at a minimal interest rate, just high enough to cover administration. Mutualism is based on a labor theory of value that holds that when labor or its product is sold, in exchange, it ought to receive goods or services embodying "the amount of labor necessary to produce an article of exactly similar and equal utility". Mutualism originated from the writings of philosopher Pierre-Joseph Proudhon.
Document 4: Josiah Warren: Josiah Warren ( ; 1798 – April 14, 1874) was an individualist anarchist, inventor, musician, and author in the United States. He is regarded by some as the first American anarchist, (though he never used the term himself) and the four-page weekly paper he edited during 1833, "The Peaceful Revolutionist", the first anarchist periodical published, an enterprise for which he built his own printing press, cast his own type, and made his own printing plates.
Document 5: The Poverty of Philosophy: The Poverty of Philosophy ( "Misère de la philosophie") is a book by Karl Marx published in Paris and Brussels in 1847, where he lived in exile from 1843 until 1849. It was originally written in French as an answer to the economic and philosophical arguments of French anarchist Pierre-Joseph Proudhon set forth in his 1846 book "The System of Economic Contradictions, or The Philosophy of Poverty."
Document 6: Anarchism in France: Anarchism in France can trace its roots to thinker Pierre-Joseph Proudhon, who grew up during the Restoration and was the first self-described anarchist. French anarchists fought in the Spanish Civil War as volunteers in the International Brigades. According to journalist Brian Doherty, "The number of people who subscribed to the anarchist movement's many publications was in the tens of thousands in France alone."
Document 7: Anarchist Manifesto: Anarchist Manifesto (or The World's First Anarchist Manifesto) is a work by Anselme Bellegarrigue, notable for being the first manifesto of anarchism. It was written in 1850, ten years after Pierre-Joseph Proudhon became history's first self-proclaimed anarchist with the publication of his seminal "What Is Property?".
Document 8: Pierre-Joseph Proudhon: Pierre-Joseph Proudhon (] ; 15 January 1809 – 19 January 1865) was a French politician and the founder of mutualist philosophy. He was the first person to declare himself an anarchist and is widely regarded as one of the ideology's most influential theorists. Proudhon is even considered by many to be the "father of anarchism". He became a member of the French Parliament after the revolution of 1848, whereafter he referred to himself as a federalist.
Document 9: Anarchy: Anarchy is the condition of a society, entity, group of people, or a single person that rejects hierarchy. The word originally meant leaderlessness, but in 1840 Pierre-Joseph Proudhon adopted the term in his treatise "What Is Property?" to refer to a new political philosophy: anarchism, which advocates stateless societies based on voluntary associations. In practical terms, anarchy can refer to the curtailment or abolition of traditional forms of government. It can also designate a nation (or anywhere on earth that is inhabited) that has no system of government or central rule.
Document 10: What Is Property?: What Is Property?: or, An Inquiry into the Principle of Right and of Government (French: "Qu'est-ce que la propriété ? ou Recherche sur le principe du Droit et du Gouvernement" ) is a work of nonfiction on the concept of property and its relation to anarchist philosophy by the French anarchist and mutualist Pierre-Joseph Proudhon, first published in 1840. In the book, Proudhon most famously declared that "property is theft".
Document 11: Democratic Communist Circle: The Democratic Communist Circle (French: "Cercle communiste démocratique", CCD; ) was a left-wing, political group founded by Boris Souvarine in February 1926 under the original name of the "cercle communiste Marx et Lénine".
Document 12: Cercle Proudhon: Cercle Proudhon (Circle Proudhon) was a political group founded in France on December 16, 1911 by George Valois and Édouard Berth. The group was inspired by Georges Sorel and a selective reading of Proudhon.
Document 13: Property is theft!: Property is theft! (French: "La propriété, c'est le vol!" ) is a slogan coined by French anarchist Pierre-Joseph Proudhon in his 1840 book "What is Property? Or, an Inquiry into the Principle of Right and of Government".
Document 14: North Group: The North Group was an intellectual community comprising various writers, artists, philosophers, politicians, and intellectuals from Northern Peru, especially from the La Libertad Region. It was founded in 1915 in the city of Trujillo. At first known as the "Bohemians of Trujillo," the community adopted the name "the North Group" in 1923. Early leaders included journalist Antenor Orrego and poet José Eulogio Garrido. Its most prominent members included poet Cesar Vallejo, politician Victor Raul Haya de la Torre, Alcides Spelucín, Macedonio de la Torre, Juan Espejo Asturrizaga, Francisco Xandóval, and Ciro Alegría. This group inspired the work of Eduardo González Viaña, one of its modern successors.
Document 15: Édouard Berth: Édouard Berth (1875–1939) was a theorist of French syndicalism and disciple of Georges Sorel.
ground_truth: Pierre-Joseph Proudhon