Succession of the dukes of Normandy and kings of England from 874 to 1307., Adv.MS.18.4.9(viii), folio 60 verso. Volume of historical and literary works, 13th century, written in England in the early 14th century., Adv.MS.18.4.9. National Library of Scotland Archives and Manuscripts Division. https://nlssb.as.atlas-sys.com/repositories/2/archival_objects/13041 Accessed September 23, 2024.