Once they were married, Charles would not allow Anne to use the title Duchess of Brittany.

Claude was the third Orleanist Princess to hold the title Duchess of Aosta.

If Sarah remarries, any use of the title Duchess of York will be lost permanently.

Fergie should be made to surrender the title Duchess of York.

The marriage was morganatic until 1790, when she was granted the title Duchess of Württemberg.

As this time, she became known as Madame la Duchesse, referring to the title Duchess of Enghien.

His wife retained the title Duchess of Richmond until her own death on 8 October 1639.

After the war, Joan remained titular title Duchess of Brittany to her death.

As a widow, she was given the title Duchess of Berry.

In 2005, he married his former mistress Camilla Parker Bowles, who uses the title Duchess of Cornwall.