John Horace Round, Geoffrey de Mandeville: A study of the Anarchy
“ The really important fact is this: that we have a continuous chain of evidence, proving that "Robert, the king's son," was not yet Earl of Gloucester, at least as late as April-May, 1121.Against this weight of accumulated evidence what is there? Absolutely nothing but that Tewkesbury charter, which is quoted from Dugdale's Monasticon, where it is quoted from a mere Inspeximus of the 10th Henry IV. (1408-9) , some three centuries after its alleged date! ”
