His life was written by Stephen de Liciaco, fourth prior of Grandmont,
in 1141: but this work seems now lost. Gerard Ithier, seventh prior, and
his abridger, fell into several anachronisms and mistakes, which are to
be corrected by the remarks of Dom Martenne, who has given us a new and
accurate edition of this life, and other pieces relating to it, Ver.
Scriptorum Ampliff. Collectio, t. 6, p. 1043. See also Dom Rivet, Hist.
Litter. de la France, t. 10, p. 410. Gallia Christ. Nova, t. 2, p. 646.