The Asociación Cultural de la Llingua Llïonesa El Fueyu signed some agreements with Leonese public institutions for promoting some municipality courses on Leonese language , as the town councils of León , Mansilla de las Mulas , Valencia de Don Juan , La Bañeza and Zamora and the provincial government of León The Asociación Cultural de la Llingua Llïonesa El Fueyu first celebrated the Leonese Language Day on June 20 , 2006 .
The Asociación Cultural de la Llingua Llïonesa El Fueyu have signed many agreements with the most important leonese institutions for teaching Leonese language in official courses .