You would be forgiven for not realising quite how many cousins Prince William and Prince Harry have.
We all know about Peter Phillips, Zara Tindall, Princess Beatrice, Princess Eugenie, Lady Louise Windsor and James, Viscount Severn, but that's just from Prince Charles's side. What about their mother’s family? Diana had three siblings and they all have children of their own - all of whom can count Prince William and Prince Harry as their first cousins.
Diana was born into the aristocratic Spencer family and grew up on the Althorp Estate in Northampton - a 100,000 sq. ft, 90-room home which will one day be inherited by a man dubbed by Tatler as a ‘Top Eligible Bachelor’.