Rudolf of St Trond
He wrote a chronicle Gesta Abbatum Trudonensium, on the abbots of his abbey, beginning in 999; it is included in the Paleographie musicale and the Monumenta Germaniae Historica. His description of monastic life includes details of musical practice and training in the methods of Guido of Arezzo. As a historian, Henri de Lubac wrote that he showed "a very exacting and almost combative idea of historical truth."
- Rodulf, Rodolfus, Rodolphe, Radulphus, Rudolph, Raoul.
- Radulphus of St. Trond
- Rudolf Steglich, Die Quaestiones in musica: ein Choraltraktat des zentralen Mittelalters und ihr mutmasslicher Verfasser, Rudolf von St Trond (1070–1138) (Leipzig, 1911/R)
- Dolores Pesce, The Affinities and Medieval Transposition (1987), pp. 39-40.
- Gordon A. Anderson and C. Matthew Balensuela. "Rodolfus of St Truiden", Grove Music Online, ed. L. Macy (accessed January 13 2014), grovemusic.com (subscription access).
- Medieval Exegesis (1988 translation), p. 73.
- (French) musicologie.org page