A very high proportion of Aragonese nobles had Jewish ancestry

Evidence

Once they had him inside, further charges were added to his dossier. His Jewish ancestry, for example (it was correct that he did have some Jewish ancestors, as did a very high proportion of Aragonese nobles). Then again blasphemy: there was testimony that once when playing pelota he had lost, and then cursed his damned luck, “proof” that he was either a blasphemer or an atheist. — L. P. Harvey, Muslims in Spain, 1500 to 1614, 580

Categorization

• QUESTION: Exactly how high a proportion of Aragonese nobles had Jewish ancestry — worth chasing the underlying scholarship.