marquisyoudaoicibaDictYouDict[marquis 词源字典]
marquis: [14] Etymologically, a marquis is a lord of the ‘marches’ or borderlands. The word comes from Old French marquis, an alteration of an earlier marchis. This was a derivative of medieval Latin marca ‘border, frontier’, source of archaic English march ‘border’. The feminine form marchioness [16] comes from medieval Latin marchionissa, a derivative of marchiō ‘lord of the marches’, which likewise was based on marca.

The French feminine form of marquis is marquise. This was borrowed into English in the 17th century and used for a ‘large tent’. It soon came to be misanalysed as a plural form, and so a new ‘singular’, marquee, was born.
=> march, mark, marquee[marquis etymology, marquis origin, 英语词源]
marquis (n.)youdaoicibaDictYouDict
also marquess, c. 1300, title of nobility, from Old French marchis, literally "ruler of a border area," from Old French marche "frontier," from Medieval Latin marca "frontier, frontier territory" (see march (n.1)). Originally the ruler of border territories in various European regions (such as Italian marchese, Spanish marqués); later a mere title of rank, below duke and above count. Related: Marquisate.