 Antonio Pérez was born in Santo Domingo de Silos, Spain on 2 May 1562 and ordained a priest in the Order of Saint Benedict.On 17 May 1627, he was appointed during the papacy of Pope Urban VIII as Bishop of Urgell.On 23 August 1627, he was consecrated bishop by Antonio Zapata y Cisneros, Cardinal-Priest of Santa Balbina.