Excerpted from Les Seigneurs de Bohon by Jean LeMelletier, Coutances: Arnaud-Bellee, 1978: Robert died young, before his father, but was old enough by 1066 to assume his inheritance.
This site is made-up of my own family tree, plus contributions from many others who have shared their research, as well as downloads from from the internet. Not everything has been varified. It should be used with caution, but is a good place to start.