Certani, Giacomo an Italian biographer and theologian, who lived in the latter part of the 17th century, wrote, La Chiave del Paradiso (Bologna, 1673, 4to): — Otto se della Ibernia (ibid. 1686, 4to): —La Vita della S. Brigeda (translated into German by Schumann; Burghausen, 1735, 4to). See Hoefer, Nouv. Biog. Générale, s.v.