marchioness

noun

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.”

2. A woman holding the rank of marquess in her own right.
3. (obsolete, slang)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."”