Bescherelle

Louis-Nicolas Bescherelle was a renowned 19th-century French lexicographer and grammarian, best known for his influential grammar reference books on French verb conjugation. He co-authored the 'Grammaire nationale' with his brother Henri and published the major 'Dictionnaire national', a key dictionary of the French language. His works remain standard references in French education today.

Paris, France Jun 10, 1802 Wikipedia Website
Grammar Lexicography Education