>In Great Britain and historically in Ireland, the correct spelling of the aristocratic title of this rank is marquess (although on the European mainland and in Canada, the French spelling of marquis is used in English)
>A woman with the rank of a marquess, or the wife of a marquess, is called a marchioness /ˌmɑːrʃəˈnɛs/[4] in Great Britain and Ireland, or a marquise /mɑːrˈkiːz/ elsewhere in Europe.