Marc Gilbert de Varennes
Marc Gilbert de Varennes was a Jesuit priest and a French writer on heraldry from the 17th century. He is best known for his large folio book Le Roy d'armes ou L'art de bien former, charger, briser, timbrer, et par consequent, blasonner toutes les fortes d'Armoiries. The 1st edition was printed in 1635. The second edition was published in Paris by Jean Billaine, in 1640.