Siardus

Abbot of the premonstratensian abbey Mariëngaard in Frisia from 1194 untill his death in 1230.

In 1617 his relics were transferred from Hildesheim to the abbey of Tongerlo.

A file with his miracles etcetera is in Wilhelmietenmuseum Huijbergen (Uit de geschiedenis van Huijbergen en van zijn Wilhelmietenmonasterium, pp. 31 ff).