* Biographer: This is the most common term for someone who writes a biography, which is a detailed account of a person's life.
* Author: This is a general term for someone who writes anything, but it can be used to describe a person who writes a biography.
* Chronicler: This term suggests a more historical or factual approach to the account, focusing on events rather than personal details.
* Memoirist: If the account is written by the person themselves, it's called a memoir, and the author is a memoirist.
* Ghostwriter: This is someone who writes a book or other text for another person, often under the other person's name.
The most appropriate term depends on the specific type of account being written and the relationship between the writer and the subject.