Roch-Ambroise Auguste Bébian
Roch-Ambroise Auguste Bébian (French: [ʁɔk ɑ̃bʁwaz oɡyst bebjɑ̃]; 4 August 1789 – 24 February 1839) was one of the first hearing educators in France to achieve native-level fluency in French Sign Language. In 1825, he published an important book, Mimographie, which utilized a method of writing signs.
Source: Wikipedia — Roch-Ambroise Auguste Bébian (CC BY-SA 4.0)