Manuel Sanchis Guarner (1911-1981). Orphan since he was a child, he was brought up by his uncle, the scholar Josep Sanchis Sivera. Graduate in Law and in Philosophy and Literature, he received training as philologist and historian in the Centre of Historical Studies of Madrid. He collaborated in the ALPI (Atlas Lingüístico de la Península Ibérica) and in 1933 he published La llengua dels valencians.

During the Spanish Civil War he joined the army of the Republic and he spent four years in prison. He lived in Majorca, where he helped in the making of the Diccionari Català-Valencià-Balear and kept writing books such as Introducción a la historia lingüística de Valencia.

In the year 1954 he joined the Faculty of Language Studies and Literature of the University of Valencia, and in 1979 he was appointed professor of valencia linguistics.
He wrote Els valencians i la llengua autòctona durant els segles XVI, XVII i XVIII, Els pobles valencians parlen els uns dels altres or La Renaixença al País Valencià. In 1972 published La ciutat de València, one of the ten most recognised books.

He created the Inter-university Institute for Valencian Language Studies and was director of the Institute of Education Sciences. He was numerary member of the Institute of Catalan Studies and also of the Spanish Royal Academy, of the Royal Academy of History and the Real Acadèmia de Bones Lletres of Barcelona. In 1974 he received the Award of Honour of Catalan Literature. His figure was very important in the process of recovery of the Valencian language and for this reason, he suffered attacks from the most reactionary sectors.