Ado belonged to a prominent noble family. He was sent while still a child for his education, first to Sigulf, abbot of Ferrières, and then to Marcward, abbot of Prüm. After the death of Marcward in 853, Ado went to Rome where he stayed for nearly five years, and then to Ravenna, after which Remy, archbishop of Lyon, gave him the parish of Saint-Romain near Vienne. The following year he was elected archbishop of Vienne and dedicated in August or September 860, despite opposition from Girard, Count of Paris, and his wife Bertha.[3]
Ado participated in the Council of Tousy, near Toul in Lorraine, on 22 October 860, and held a council at Vienne [fr] in 870. After his death on 16 December 876, his body was buried in the Church of the Apostles in Vienne, now called St. Peter's Church, the usual place of burial of the archbishops of Vienne. His feast day is celebrated on 16 December.
Several of his letters are extant and reveal their writer as an energetic man of wide sympathies and considerable influence. Ado's principal works are a martyrology,[5] and a chronicle, Chronicon sive Breviarium chronicorum de sex mundi aetatibus de Adamo usque ad annum 869.[6][7][8]
Ado's chronicle is based on that of Bede, with which he combines extracts from the ordinary sources, forming the whole into a consecutive narrative founded on the conception of the unity of the Roman Empire, which he traces in the succession of the emperors, Charlemagne and his heirs following immediately after Constantine VI and Irene. "It is," says Wilhelm Wattenbach, "history from the point of view of authority and preconceived opinion, which exclude any independent judgment of events."[8]
^Charles Louis Richard: Bibliothèque sacrée (Boiste fils ainé, 1822).
^René François Rohrbacher, Auguste-Henri Dufour: Histoire universelle de l'Église Catholique, Volume 12 (Gaume Frères, 1857)
^Thomas Mermet: Histoire de la ville de Vienne ([archive] Firmin Didot, 1833)
^M. Masnou, Josep (2013). "Els Necrologis de Sarrateix"(pdf). Miscellània Litúrgica Catalana (in Spanish). 21. Barcellona: Catalunian society of Liturgical Studies: 115–50. ISSN2013-4010. OCLC945640521. Archived from the original on 30 May 2021. Retrieved 30 May 2021.
^ abcOne or more of the preceding sentences incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911). "Ado". Encyclopædia Britannica. Vol. 1 (11th ed.). Cambridge University Press. p. 210. Endnotes:
Wattenbach, W. Deutschlands Geschichtsquellen, Vol. I. (Stuttgart and Berlin, 1904).
^Written about 870 and published in Migne, cxxiii, pp. 435-442.
^Published in Mabillon, Acta Sanct. i, pp. 678-681, Migne, cxxiii, pp. 443-450, and revised in the Bollandist Acta Sanctorum, 29 October, xii, pp. 840-843.