Church of the Apostles
Ado participated in the Council of Tousy, near Toul in Lorraine, on 22 October 860, and held a council at Vienne 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.