^Jones.The end of Roman Britain: Military Security. pp.164 - 168. The author discusses the failings of the Roman army in Britain and the reasons why they eventually left.
^Jones.The end of Roman Britain. p246. Roman Britain's death throes began on the last day of December 406 when Alans, Vandals, and Sueves crossed the Rhine and began the invasion of Gaul
^ 3.03.1Morris. The Age of Arthur.pp.56 -62. Picts and Saxons.
^Myres. The English Settlements. p.14. Talking about Gildas references to the arrival of three keels (ships),...this was the number of ship loads that led to the foedus or treaty settlement. Gildas also uses in their correct sense technical terms, annona, epimenia, hospites, which most likely derive from official documents relating to the billeting and supply of barbarian foederati.
^ 5.05.15.2Morris. Age of Arthur. p.75. - Gildas:.. The federate complained that their monthly deliveries were inadequately paid.. - All the greater towns fell to their enemy..
^Dark. Britain and the End of the Roman Empire. p.29. Referring to Gildas text about a letter:The Britons...still felt it possible to appeal to Aetius, a Roman military official in Gaul in the mid-440s
^Dark. Britain and the End of the Roman Empire. p.29.Both Zosimus and Gildas refer to the 'Rescript of Honorius',a letter in which the Western Roman emperor told the British civitas to see to their own defence.
^Esmonde Cleary. The Ending of Roman Britain. pp.137 - 138. The author suggests that the 'Rescript of Honorius' may have been for a place in southern Italy rather than Britain and that the chronology is wrong