author
Known for historical and chronological reference works, this little-documented French author appears to have been active in the 18th century and later associated with several learned societies.
Robert Arnault is a French author listed by Wikisource as the writer of several chronological works. The same source describes him as a member of multiple learned societies and places him in the 18th century, with activity extending beyond 1837.
Published records connected to his name include historical reference books such as Dictionnaire historique universel, a large chronological compendium covering peoples and events from antiquity onward. Because reliable biographical information is scarce in the sources I could confirm, many personal details about his life remain unclear.
What stands out most is the kind of work he left behind: ambitious, organizing, reference-minded writing meant to gather history into a usable form for readers.