Antonio de Lebrija (Lebrija, Seville 1441 — Alcalá de Henares, 5 July 1522), also known as Antonio de Nebrija, Elio Antonio de Lebrija, Antonius Nebrissensis, and Antonio of Lebrixa, (1441–1522) was a Spanish Renaissance scholar. He was a teacher, historian, poet and astronomer, best known for writing a grammar of the Castillian language. His grammar is often credited as the first published grammar of a Romance language and set the standard for subsequent modern Spanish language grammars.
http://en.wikipedia.org/wiki/Antonio_de_Nebrija accessed 30/04/14