chronistn.

/ˈkrɒnɪst/Etymology: < Greek χρόνος time + -ist suffix.
rare.
the world > time > reckoning of time > chronology > [noun] > recorder of time and events
1870 14 May 639 The Chronists dependent on Eusebius.
This entry has not yet been fully updated (first published 1889; most recently modified version published online March 2018).