CASTRO PALAO, FERNAND DE. — Jesuit, moral theologian, born in León in 1581; died in Medina on 1 December 1633. He first taught philosophy at Valladolid, then moral theology at Compostela and Salamanca, with an extraordinary attendance of students; he was consulted from every quarter, including by the tribunal of the Inquisition, concerning the most serious cases.
He published a complete course of moral theology in 7 vols.: De virtutibus et vitiis contrariis (Lyon 1631); De virtute religionis et annexis (2 vols., ibid. 1635–39); De Sacramentis (2 vols., ibid. 1647); De censuris (ibid. 1647); De iustitia et iure (ibid. 1651). Profound, prudent, and judicious, and held in high esteem by s. Alfonso de' Liguori, he is regarded as one of the classics in the field.