Théophile Jeusset, was a Breton nationalist writer and fascist political activist. He is also known by his Breton language

Breton language

Breton is a Celtic language spoken in Brittany , France. Breton is a Brythonic language, descended from the Celtic British language brought from Great Britain to Armorica by migrating Britons during the Early Middle Ages. Like the other Brythonic languages, Welsh and Cornish, it is classified as...

 pseudonym Jean-Yves Keraudren.

Born in Rennes

Rennes

Rennes is a city in the east of Brittany in northwestern France. Rennes is the capital of the region of Brittany, as well as the Ille-et-Vilaine department.-History:...

 on 25 April 1910, Jeusset adopted militant Breton nationalism from his youth. Initially associated with the Breton Autonomist Party

Breton Autonomist Party

The Breton Autonomist Party was a political party which existed in Brittany from 1927 to 1931-Origin:The party was created at the first congress of the nationalist journal Breiz Atao in Rosporden on September 1927. It followed from establishment of the Unvaniez Yaouankiz Vreiz...

, Jeusset broke away from it to form the fascistic Breiz da Zont

Breiz da Zont

Breiz da Zont , was a Breton nationalist periodical active during the 1930s. It was affiliated to an extremist offshoot of the Breton Autonomist Party....

 movement and its political wing, the Parti nationaliste intégral breton (Breton Integral Nationalist Party: PNIB). The party was, however, tiny. Jeusset later joined with fellow nationalist extremists Gwilherm Berthou

Gwilherm Berthou

Gwilherm Berthou was a Breton nationalist terrorist and neo-Druidic bardic poet. He was a member of the Breton artistic movement Seiz Breur.-Terrorism:...

 and Célestin Lainé

Célestin Lainé

Célestin Lainé was a Breton nationalist and collaborator during the Second World War who led the SS affiliated Bezen Perrot militia. His Breton language name is Neven Hénaff. He was a chemical engineer by training. After the war he lived in Ireland.- Breton terrorism :He was born in 1908 in Nantes...

 to found Kentoc'h Mervel (Sooner Death), a group dedicated to direct action. Lainé, however, insisted that a more tightly organized group was necessary, going on to create the terrorist cell Gwenn ha du

Gwenn ha du (terrorism)

Gwenn ha Du was a Breton-based terrorist group founded at the end of 1930 in Paris by Célestin Lainé. It advocated Breton nationalism through "direct action" and published a secret manual aimed at instructing readers in terrorism...

. After Gwenn ha du performed its first violent act, blowing up a sculpture, Jeusset was one of six nationalist militants who were arrested and detained.

Jeusset linked Breton nationalism to antisemitism, writing in 1931:

It is due to our particular resistance to the conquest of sovereign French territory by the corrupting ideas which emanate more or less from the Jews - 'freemasonry', 'secularism' - etc, that the Bretons were decimated during the last world war: over 200,000 of them. It is easy to invoke military explanations for this carnage, but that does not alter the fact the actual organizer of troop dispositions was the Jew Abrahami, born... in the ghetto of Constantinople.

Jeusset was later associated with Olier Mordrel

Olier Mordrel

Olier Mordrel is the Breton language version of Olivier Mordrelle, a Breton nationalist and wartime collaborator with the Third Reich who founded the separatist Breton National Party. Before the war he worked as an architect. His architectural work was influenced by Art Deco and the International...

 who founded the Breton National Party

Breton National Party

The Breton National Party was a nationalist party in Brittany that existed from 1931 to 1944. The party was disbanded after the liberation of France in World War II, because of ties to the Nazi party....

 on the model of the Nazi party.

During World War II

World War II

World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

 Jeusset broke away from Mordrel to create his own party once more, the Breton Social-National Workers' Movement

Breton Social-National Workers' Movement

The Breton Social-National Workers' Movement was a nationalist, separatist, and Fascist movement founded in 1941 by Théophile Jeusset. It emerged in Brittany from a deviationist faction of the Breton National Party; it disappeared the same year....

, but he was unable to obtain many followers. Jeusset eventually joined Lainé's Bezen Perrot

Bezen Perrot

The Bezen Perrot was a Breton collaborationist force during the Nazi occupation of France that grew from the earlier Lu Brezhon militia. Led by Célestin Lainé and Alan Heusaff, as many as 70 to 80 people joined the ranks of the Bezen Perrot, or "Perrot Unit", at one point or another...

 militia, which was affiliated to the SS. Captured after the war, Jeusset was sentenced to forced labour for life.

In 1965 he published an autobiographical memoir: A Contre-courant (Against the Current).