Bevan, Rosie, A Study of a Medieval Knightly Family: The Longfords of Derbyshire, in Foundations of Medieval Genealogy, vol 1, no 4 (2004), pp211-231. Available at https://fmg.ac/publications/journal/vol-1/file/194-longford1. Information from this source tagged as [Ref: Bevan Longfords p[0-9]*].
Sources for birth and parent Information
parents:
[Ref: Bevan Longfords p214]
Sources with Information about marriage to Ralph BRAILSFORD