Eustache-Hyacinthe Langlois (French pronunciation: [østaʃjasɛ̃t(ə) lɑ̃ɡlwa]; 3 August 1777 – 29 September 1837) was a celebrated French painter, draftsman, engraver and writer. He became known as the "Norman Callot". He taught both his daughter Espérance Langlois and his son Polyclès Langlois and they often assisted him with drawings and engravings. Source: Wikipedia (en)