Claude Drigon, Marquis de Magny
Claude Drigon, Marquis de Magny (1796–1879) was a French heraldic writer, born in Dijon. After being employed for some time in the postal service, he devoted himself to the study of heraldry and genealogy, his work in this direction being rewarded by Pope Gregory XVI with a marquisate.
Source: Wikipedia — Claude Drigon, Marquis de Magny (CC BY-SA 4.0)