Christian-Joseph Guyonvarc'h
Christian-Joseph Guyonvarc'h (18 October 1926, Auray – 9 January 2012, Guilers) was a Breton philologist and linguist who specialised in Celtic studies.
Christian-Joseph Guyonvarc'h (18 October 1926, Auray – 9 January 2012, Guilers) was a Breton philologist and linguist who specialised in Celtic studies.

Biography
Christian-Joseph Guyonvarc'h was born on 18 October 1926 in Auray, Brittany (France), and grew up in a French-Breton bilingual environment. Along with his wife, Françoise Le Roux (1927–2004), he wrote numerous works on Celtic studies, including Les Druides (1986), La Civilisation celtique (1990), La Société celtique (1991), Les Fêtes celtiques (1995), and Les Royaumes Celtiques (2001). Georges Dumézil directed Le Roux's first studies, and was president of the jury at Guyonvarc'h's doctorate thesis in 1980.Guyonvarc'h taught Old Irish and Breton at Rennes 2 University. He died on 9 January 2012 in Guilers.Guyonvarc'h could speak Breton, Welsh, and Irish (in their modern and historical stages), as well as modern French, German, Dutch, English. From 1979 to 1981, he was a member the patronage committee of Nouvelle École, the annual magazine of the ethno-nationalist think tank, GRECE.

Works
References
Bibliography
Duranton-Crabol, Anne-Marie (1988). Visages de la Nouvelle droite: le GRECE et son histoire. Presses de Sciences Po. ISBN 978-2-7246-0561-7.
Plourin, Jean-Yves (2013). "Guyonvarc'h Christian-Joseph (1926-2012)". Encyclopædia Universalis.