Greatly to his disappointment the book was not a financial success , and inflicted a heavy loss on the publishers .
For the earlier portion , especially the Norman and Angevin period , Doyle relied too much on secondary authorities , and was not sufficiently critical .
Greatly to Doyle 's disappointment the book was not a financial success , and inflicted a heavy loss on the publishers .
For the earlier portion , especially the Norman and Angevin period , Doyle relied too much on secondary authorities , and was not sufficiently critical .