David Hume,
The History of England in Three Volumes…
“ Peter, king of Castile, stigmatized by his contemporaries and by posterity with the epithet of Cruel, had filled with blood and murder his kingdom and his own family; and having incurred the universal hatred of his subjects, he kept from present terror alone, an anxious and precarious possession of the throne. His nobles fell every day the victims of his severity: he put to death several of his natural brothers, from groundless jealousy: each murder, by multiplying his enemies, became the occasion of fresh barbarities ”
