Wrottesley, George, Pedigrees from the plea rolls: collected from the pleadings in the various courts of law, A.D. 1200 to 1500, from the original rolls in the Public Record Office. London: 1905. OCLC 25155240. Newberry Library, Chicago. Available at http://archive.org/details/pedigreesfromple00wrotrich Information from this source tagged as [Ref: Wrottesley PPR p[0-9]*].