Clavenau, Ignaz, a German theologian of the order of the Benedictines he was born at Gratz in 1653. He spent his life in the affairs of his state and in instruction, and died in 1701. His works were published by order of his superiors nineteen years after his death, under the title: Ascesis, etc. (Salzburg, 1721, 4to). They include the following treatises: Vita Benedicti Moraliter Exposita; Ehucidarum in Regulam Ayusdem et in Formulam Professionis Benedictince De Regendo Homine Exteriore; Traciatus de Arte Rhetorica, cum. Appendice de Eloquentia Sacra pro Conciosiatoibus. See Hoefer, Nouv. Biog. Generale, s.v.