SOURCE-10796Research NeededProbable
P L Kessler, "Post-Roman Britain: The British Kingdoms of Armorica AD 500-700", ...
Full citation
P L Kessler, "Post-Roman Britain: The British Kingdoms of Armorica AD 500-700", The History Files, 1999, http://www.historyfiles.co.uk/FeaturesBritain/ArmoricaMap.htm, accessed 11 August 2015.