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

Context paragraphs:
Édouard Jonas: Édouard Jonas (9 May 1883 – 3 December 1961) was an antique dealer of Jewish origin, who became a member of the French parliament.  When France surrendered to the Germans in 1940 he left the country.  He was stripped of his citizenship and his property seized.  After the war he was made a member of the Legion of Honor.  In 2011 it was agreed to return two of the seized paintings to his heirs.

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.

European Democrats: The European Democrats was a loose association of conservative political parties in Europe.  It was a political group in the European Parliament from 1979 until 1992, when it became a subgroup of the European People's Party–European Democrats (EPP-ED) group.  The European Democrats continued to exist as a political group in the Parliamentary Assembly of the Council of Europe (PACE) until 2014, when it became the European Conservatives Group.

French and European Nationalist Party: The French and European Nationalist Party (French: "Parti nationaliste français et européen" or PNFE) was a minor French far-right political group founded in 1987.  It was led by Claude Cornilleau and despite its name was not a political party in the conventional sense.  The group used the Celtic cross as its emblem and produced a journal entitled "Tribune Nationaliste".

Édouard Berth: Édouard Berth (1875–1939) was a theorist of French syndicalism and disciple of Georges Sorel.

Party of Order: The Rue de Poitiers Committee (French: "Comité de la rue de Poitiers" ), best known as Party of Order (French: "Parti de l'Ordre" ), was a political group, formed by monarchists and conservatives, in the French parliament during the French Second Republic.  It included monarchist members from both the Orleanist and Legitimist factions, and also some republicans who admired the American model of government.  After the 1848 elections to the French Parliament, it was the second-largest group of deputies, after the moderate Republicans, with 250 of the 900 seats in the Parliament.  Prominent members included Adolphe Thiers, Francois Guizot, and Alexis de Toqueville.

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".

Blood &amp; Honour: Blood & Honour is a neo-Nazi music promotion network and political group founded in the United Kingdom in 1987.  Founded by Ian Stuart Donaldson and Nicky Crane, it is composed of white nationalists and has links to Combat 18.  The group organises white power concerts by Rock Against Communism (RAC) bands and distributes a magazine of the same name.

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.

Irish Republican Voice: Irish Republican Voice was a political group founded by dissident republicans.  The group was believed to be the political wing of the group Saoirse na hEireann (itself an RIRA splinter group).  The IRV have denied this though they say they recognise it as the only legitimate army.  Members include prominent dissident republicans such as Paul Stewart and James McDonagh.

Supporting paragraphs: Cercle Proudhon Pierre-Joseph Proudhon
Answer: Pierre-Joseph Proudhon