marchioness

noun3

1. •
   The wife of a marquess.

   • The first train over the bridge was driven by the Marchioness of Tweeddale, and the engine was No. 602 of the North British Railway Company. — 1941
2. •
   A woman holding the rank of marquess in her own right.
3. •
   (slang, no longer used) An old-fashioned maid-of-all-work; female servant.

   • The beauty and charm of the little marchioness and the tender hearted old colored man, with their mutual affection, forcibly remind the reader of "Uncle Tom" and "Eva." — 1896