From his life written by a faithful acquaintance at Bourges, (abridged
by Surius,) and again by Peter, a monk of Chaalis, both soon after his
death: collected by Dom le Nain, in his history of the Cistercians, t.
7. See also the notes of Bollandus, with a fragment of a third life, and
Gallia Christ. Nov. t. 2. p. 63.