 On 5 September 1578, he was appointed during the papacy of Pope Gregory XIII as Bishop of León.In 1578, he was consecrated bishop by Filippo Sega, Bishop of Piacenza, with Diego de Simancas, Bishop of Zamora, and Diego de la Calzada, Auxiliary Bishop of Toledo, serving as co-consecrators.He served as Bishop of León until his death on 14 November 1592.