 In this capacity, he served as head of the government of Peru (acting viceroy) for part of the year 1584.The other "oidores" (members of the Audiencia) were "Licenciado" Juan Bautista Monzón and Doctors Pedro de Arteaga y Mendiola and Alonso Criado de Castilla.He was soon replaced in the position of viceroy by Fernando Torres de Portugal y Mesía.