the first written references dealing with the local speech like "bercian dialect" correspond to the middle of the 19th century in isidoro andrés de llano's work, "remembrance of puentedeume in bercian dialect", 1860, published in the "esla" journal. in 1861, antonio fernandez morales wrote upon mariano cubí's (co-author) request, in bercian dialect: "ensaios poéticos en dialecto berciano".