^Martin Biddle, Beatrice Clayre, Michael Morris, 'The Setting of the Round Table', Martin Biddle, King Arthur's Round Table: An Archaeological Investigation (Boydell, 2000), p. 69.
^Mitchell Gould, 'Philip II of Spain: King, Consort, Son', Aidan Norrie, Carolyn Harris, J. L. Laynesmith, Danna R. Messer, Elena Woodacre, Tudor and Stuart Consorts: Power, Influence, and Dynasty (Palgrave Macmillan, 2022), p. 167.