Duke of Kent, was also joined by his son, Lord Nicholas Windsor, and his brother, Prince Michael of Kent. Birthday wishes were posted on the royal family's official social media accounts ...

Katharine, Duchess of Kent is one royal you may not have heard of. Married to Prince Edward, the Duke of Kent since 1961, the Duchess of Kent has kept a very low profile in recent years.

Duke of Kent and Princess Marina of Greece and Denmark. He inherited his title at the age of 7 when his father died and is the elder brother of Princess Alexandra and Prince Michael of Kent.

including the late Queen Elizabeth's cousins, Prince Edward, Duke of Kent, Prince Richard, Duke of Gloucester, and Prince Michael of Kent.