After the First World War, he helped to create the Group of Young Bretons in 1919 with other members of Action Française like Charles Maurras.
This movement was the origin of the separatist faction Breiz Atao, which he joined, but quickly left, as their radical views were incompatible with his own conservatism.
From a professional point of view, he started his career as a journalist with the journal Le Nouvelliste de Bretagne in Rennes.
From 1950, he lived in Rennes as the editor in chief of Nouvelles de Bretagne (post war successor paper of the Nouvelliste).
In all, he was an important literary activist, crucial in the regionalist politics and history of the west of France.