Atto of Vercelli, Collectio canonum
Atto, the bishop of Vercelli, (924– circa 960) compiled a collection of 100 canons based on the Collectio Anselmo dedicata, Dionysiana adaucta and Capitulary I of Theodulf of Orléans. The title: Capitula canonum excerptarum de diversis conciliis, decretalibus, statutis atque epistolis congruentium ad forense iudicium tempore domini Attonis episcopi. The texts are evenly divided between conciliar canons on the 75 one hand and, on the other, papal decretals genuine and false, together with chapters from the capitulary. The collection deals exclusively with clerical discipline. Two medieval copies have survived: Vat. lat. 4322, fol. 69r–83r (10th century, Vercelli), and Vercelli, BC XXXIX (40), fol. 198ra–205rb (10th century). The present analysis (AV) is based on the edition of Rudolf Pokorny.
Literature:
The most recent edition is that of Rudolf Pokorny, Atto von Vercelli (MGH Capit. episc. 3, pp. 243–304). An earlier edition, based on the Vatican copy, was made by Luc D’Achery and L.-F.-J. De La Barre, Spicilegium sive collectio veterum aliquot scriptorum qui in Galliae Bibliothecis delituerant 1, Paris 1723, pp. 402–414. From there it was reprinted by J. D. Mansi, Sacrorum conciliorum nova et amplissima collectio 19.145–264 and in Migne PL 134. 27–52. It was edited again in 1768, using the Vercelli manuscript, by Carlo Buronzo del Signore, Attonis opera 2 (Vercelli 1768), pp. 263–295. See also Joachim Bauer, Die Schrift „De pressuris ecclesiasticis“ des Bischofs Atto von Vercelli: Untersuchung und Edition, Heidelberg 1975. Also Theo Kölzer, „Atto von Vercelli“, Lex.MA 1 (1980), p. 1181. See Suzanne F. Wemple, The Canonical Resources of Atto of Vercelli (926–960), Traditio 26 (1970), pp. 335–350. Eadem, Atto of Vercelli. Church, State and Christian Society in Tenth Century Italy (Studi e Testi 27, Rome 1979). See Landau, Kanonessammlungen in der Lombardei, p. 432. See also the contributions of Guglielmo Cavallo and Massimo Olddoni to Il secolo di ferro: Mito e realtà del secolo X: 19–25 aprile 1990, Spoleto, Centro Italiano di Studi sull’Alto Medioevo 38, 2, Spoleto 1991, pp. 759–794 and 1007–1043 respectively. – Kéry, Canonical Collections, pp. 191–93.
