Gonzalo de Berceo (ca. 1197 – before 1264) was a Castilian poet born in the Riojan village of Berceo, close to the major Benedictine monastery of San Millán de la Cogolla. He is celebrated for his poems on religious subjects, written in a style of verse which has been called Mester de Clerecía, shared with more secular productions such as the Libro de Alexandre, the Libro de Apolonio. He is considered the first Castilian poet known by name.
Gonzalo is recorded as being a deacon in his home parish in the early 1220s, and as a priest from 1237 on. It has been surmised that he may have studied in the nascent university of Palencia, and may have served in the curia of the bishop of Calahorra (...) from http://en.wikipedia.org/wiki/Gonzalo_de_Berceo acc. 04/01/2015