"the Duchess of Flintshire"
Map of the historic counties of Wales
Creative Commons Attribution Share AlikeMap of the historic counties of Wales - Credit: XrysD

The Duchess of Flintshire is a fictional title. Interestingly, there are characters called the Marquess and Marchioness of Flintshire (also imaginary titles) in Downton Abbey, the television period drama created by Julian Fellowes, and first aired in 2010.

Flintshire is one of the 13 historical counties of Wales, situated in the far northeastern corner of the map on the right.