Lineage Sources:
Cokayne's Complete Peerage of England, Vol. 4, pp. 267-278; Vol. 5,
pp. 305-320.
Allstrom's Dict. of Royal Lineage, Vol. 1, pp. 133-140, 169-177; Vol.2,
pp. 618-621.
Betham's Charts of Royal Houses of Europe, DCXIV, CCXXXIII and IV.
Williams' Historians' History of the World, Vol. 10, p. 58.