Roger de Montbegon
Roger de Montbegon was a landowner in northern England, Baron of Hornby, and one of Magna Carta sureties.
There is a scholarly debate about his place in the list of sureties. J. C. Holt takes it that Matthew Paris made a mistake in replacing his name with 'Roger de Mowbray'. According to the record publicized by the National Society Magna Charta Dames and Barons, Roger abandoned the sureties and therefore Roger de Mowbray was substituted for him; this probably explains Matthew Paris' alleged error.
