### Clue: Old historian, very sick by end of life, died tormented (10)
### Answer: BEDEVILLED 
 ### Explanation: Definition: tormented
  BEDE(Saint Bede, 7C monk who wrote the earliest history of England apparently) + V($$v$$ery) + ILL(sick) **plus**(by) E(last letter,end of "life") + D($$d$$ied).