Pierre Mauclerc de Dreux or Peter I; Duke of Brittany; died 1250. He wears a full suit of chainmail; sleeveless tunic; spurs; belt and sword. He was the first duke of Burgundy to show his blazon (coat of arms) on his escutcheon (his father's checkered silver and blue field; quarter ermine). Handcoloured copperplate drawn and engraved by Leopold Massard from French Costumes from King Clovis to Our Days; Massard; Mifliez; Paris; 1834.