The Irmandades da Fala (English: "Brotherhood of the Language") was a Galician nationalist organization active between 1916 and 1936.
It was the first political organization of Galicia that used only the Galician language.
On January 5, 1916, Antón Vilar Ponte started a campaign for the establishment of a League of Friends of the Galician Language in the newspaper La Voz de Galicia and in March 1916 he published Galician Nationalism (Notes for a Book): Our Regional Affirmation, where he supported the protection, dignification and use of the Galician language.
The most important of these were Antón Losada Diéguez and the Traditionalists and the Liberal Democrats.
[1] In the congress of November 1918 in the city of Lugo, they established their program:[2]