[2] On 31 August 822, he was a member of a Missus dominicus court held in Allershausen.
At the same court, he was sued by Bishop Hitto of Freising over possession of the church at Kienberg.
[3] Nidker died around 830 and was buried in the church of Saints Ulrich and Afra.
[5] In 1064, when the church was demolished and rebuilt, the bones of Nidker were found along with those of Saint Digna of Augsburg and two earlier bishops, Adalbero [de] and Wicterp [fr].
After 1494, Nidker is depicted alongside Digna, Adalbero, Wicterp and Bishop Tosso [de] on many of the Ulrich crosses that were purchased by pilgrims at the church.