historian

noun

1. A writer of history.
2. One who studies or researches history.

   “If this is what real people and societies are like, then it may be appropriate for historians to represent their subjects' lives in storylike form.”

   “history does not consult the convenience of historians, though some of them are not always aware of it.”

3. One who recounts their own medical history.

   “The patient is unconscious when the syncopal event takes place and therefore is a poor historian.”