If you subscribe to the idea of the Six Degrees of Separation, you will believe that we are all only six of fewer social links away from each other. That number will certainly become smaller when you take the Royal Family into consideration.
For just under 1000 years, noble families were paired with other noble families in marriage to ensure a continuation of the line.
The result of the hundreds of arranged marriages is that there are some very interesting familial links, such as how Diana, Princess of Wales was more aristocratic than her husband, Prince Charles, and indeed, the Queen.
Diana Francis Spencer was born on July 1, 1961 at Park House on the Sandringham Estate in Norfolk. She was the fourth of five children born to John Spencer, Earl Spencer and the Honourable Mrs Frances Shand Kydd.
The family were very close with the royals and Diana used to spend a lot of time playing with her future brothers-in-law, Princes Andrew and Edward at Sandringham House.
The Spencer family is historic and has been allied with the Royal Family for many hundreds of years. It was founded in the 15th century and can count links to monarchs such as Henry VIII and King George III.
But how is Diana, Princess of Wales considered more aristocratic than the Royal Family?