# Note:
Ibert the Marshal, with Count William [the Conqueror] and other magnates, attested a charter within the years 1038-1050 for the Abbey of the Holy Trinity of the Mont de Rouen. [Complete Peerage XI:Appendix E:122]
Note: CP does not say that Ibert is father of Miles, the next Marshal, but the office was hereditary.
Title: Complete Peerage of England Scotland Ireland Great Britain and the United Kingdom, by G. E Cokayne, Sutton Publishing Ltd, 2000
Page: XI:Appendix E:122-3