Bevan, Rosie, Richard de Muscegros. Posting to soc.genealogy.medieval (email list GEN-MEDIEVAL) on 1/20/2015. Subject: Parentage of Robert Muscegros. Available at https://groups.google.com/g/soc.genealogy.medieval/c/cSvfBR8PX1o/m/UEhkjM2Ig_wJ. Author address: rbevan at fernside dot co dot nz. Information from this source tagged as [Ref: Rosie Bevan SGM 1/20/2015-194548].
Sanders, I. J., English Baronies, A Study of Their Origin and Descent 1086-1327. Oxford: Clarendon Press, 1960. Information from this source tagged as [Ref: Sanders Baronies p[0-9]*].
Sources for birth and parent Information
father:
[Ref: Sanders Baronies p20]
Sources for death Information
date:
[Ref: Sanders Baronies p20]
Sources with Information about marriage to Saher De St ANDREW