Nicholas de Fer (1646-1720) was the son of a map seller, Antoine de Fer, and grew to be one of the most well-known mapmakers in France in the seventeenth century. He was apprenticed at twelve years old to Louis Spirinx, an engraver. When his father died in 1673, Nicholas helped his mother run the business until 1687, when he became the sole proprietor.
His earliest known work is a map of the Canal of Languedoc in 1669, while some of his earliest engravings are in the revised edition of Methode pour Apprendre Facilement la Geographie (1685). In 1697, he published his first world atlas. Perhaps his most famous map is his wall map of America, published in 1698, with its celebrated beaver scene (engraved by Hendrick van Loon, designed by Nicolas Guerard). After his death in 1720, the business passed to his sons-in-law, Guillaume Danet and Jacques-Francois Benard.
Nicholas Sanson (1600-1667) is considered the father of French cartography in its golden age from the mid-seventeenth century to the mid-eighteenth. Over the course of his career he produced over 300 maps; they are known for their clean style and extensive research. Sanson was largely responsible for beginning the shift of cartographic production and excellence from Amsterdam to Paris in the later-seventeenth century.
Sanson was born in Abbeville in Picardy. He made his first map at age twenty, a wall map of ancient Gaul. Upon moving to Paris, he gained the attention of Cardinal Richelieu, who made an introduction of Sanson to King Louis XIII. This led to Sanson's tutoring of the king and the granting of the title ingenieur-geographe du roi.
His success can be chalked up to his geographic and research skills, but also to his partnership with Pierre Mariette. Early in his career, Sanson worked primarily with the publisher Melchior Tavernier. Mariette purchased Tavernier’s business in 1644. Sanson worked with Mariette until 1657, when the latter died. Mariette’s son, also Pierre, helped to publish the Cartes générales de toutes les parties du monde (1658), Sanson' atlas and the first French world atlas.