IPA: /hɪˈstɔːrɪəˌɡræfə/
KK: /hɪˈstɔrɪəˌɡræfər/
A person who writes about history, often officially or for a specific organization.
The historiographer documented the events of the past in great detail.
Historiographer → It is formed from "historia" (from Greek "ἱστορία", meaning inquiry or knowledge gained by inquiry) and "-grapho" (from Greek "γράφειν", meaning to write). The word refers to someone who writes about history or records historical events.
Think of someone who 'writes' ('grapho') about 'inquiry' or 'knowledge' ('historia') — that's what a historiographer does.