Florence Harding was called the duchess by her husband.
Duchess, Countess, Marchioness, Lady....
duchess gaga and lord gaga
A lady : )
In general, they are called Duchess (or whichever other hereditary title they hold), or Lady or Dameotherwise.
A lady. Moreover, she is a duchess and is addressed as 'Your Grace'.
The territory of a duke or duchess was called a Duchy.
She would be a Lady. She would be addressed as "Your Ladyship," unless she is a duchess, in which case she is called, "Your Grace." If her husband is a baron, she would be a baroness. If her husband is a count or earl, she would be a countess. If her husband is a marquess, she would be a marchioness; if he is a marquis, she is a marquise, and if he is a margrave, she is a margravine. If her husband is a duke, she is a duchess. There is more information at the link below.
The Duchess of Grafton, Fortune Fitzroy
A duchess is the highest ranking non-royal inherited peerage title. Its male counterpart is a duke.
Informally it is Catherine Elizabeth Windsor.Formally it is Her Royal Highness, The Duchess of Cambridge, in Scotland Her Royal Highness The Countess of Strathearn. Her full title being, at present, Her Royal Highness The Duchess of Cambridge, Countess of Strathearn and Lady Carrickfergus.
George Washington, his wife 'Martha Washington' was the first woman to be called 'the First Lady'.
The president's wife is called the first lady .