GREGORY I, Pope (c.540-604). Treynta y seys amonestaciones del pastoral. Zaragoza: Diego Hernandez, 15 May 1547. 8° (140 x 95mm). Black letter. Title in red and black with arms of Ynes de Mendosa and woodcut border. (Repairs to margins of many leaves with some letters supplied in manuscript, losses to some shoulder notes, without final blank.) Blue morocco gilt by Brugalla, 1952, sides with supralibros, gilt edges. Provenance: Antonio López, 1944. FIRST EDITION IN SPANISH of St. Gregory's influential treatise on pastoral care. Palau VI, 299981.