Kate's middle name is Elizabeth. She however is not Kate Windsor. The royal family does not generally use a surname. She is now simply Princess Catherine Dutchess of Cambridge
Windsor
Windsor
the answer is Windsor!
Windsor
Kate Keller's middle name was Adams.
Her birth name is Kate Elizabeth Winslet.
Her full name is, Katerina [Kate] Elizabeth DiCamillo
Kate
Her first name is Mia and her middle name is honey
Royalty do not use last names in the traditional sense. When last names are necessary, such as in marriage, Prince William, Prince Harry, and the other descendants of Elizabeth II and Prince Philip are to use the name Mountbatten-Windsor. This means that Kate's last name is Mountbatten-Windsor, her full name is Catherine Elizabeth Mountbatten-Windsor, but she will be known by her title, the Duchess of Cambridge.
Royalty do not use last names in the traditional sense. When last names are necessary, such as in marriage, Prince William, Prince Harry, and the other descendants of Elizabeth II and Prince Philip are to use the name Mountbatten-Windsor. This means that Kate's last name is Mountbatten-Windsor, her full name is Catherine Elizabeth Mountbatten-Windsor, but she will be known by her title, the Duchess of Cambridge.
She will be known as Catherine of Wales or Catherine of Windsor.