His bishopric, which covered much of the former province of Raetia Secunda, was fought over during that period by the Lombards and the Franks.
In 590 the Franks invaded the valley of the Adige over the Reschen Pass, destroying several Lombard-Roman strongholds.
In 591, with other bishops, he signed a document to the emperor Maurikios, in which he opposed Pope Gregory the Great in the context of the Three-Chapter Controversy.
Because he suffered from the attacks of the Arian Lombards, the pagan Baiuvarii and the Slavs, he was venerated as a martyr between the mid-10th century and the beginning of the 12th century; in modern times he is venerated as a confessor.
[5] In Säben in 1982 a bishop's grave was discovered that is contemporary with Ingenuinus.