Marquis
mar'kwis, a title of nobility. In the British House of Lords a marquis ranks next to the highest order, that of a duke. He is addressed as "my lord Marquis;" his wife as "my lady Marchioness." The coronet is a golden band surmounted by four golden leaves and as many large pearls. All are of equal height and are connected by a golden wire or vine. The first British nobleman of the rank was Robert de Vere, created Marquis of Dublin in 1385.
Volume III · Aiton’s Encyclopedia