When looking for these traits, Dr Sam commented on the key signs of this with some members of the Royal Family.

Princess Anne is the only daughter of Queen Elizabeth II and Prince Philip, 99.

She is also the second born child of the Queen, behind Prince Charles, 71.

Dr Sam added: “It’s tricky to know exactly what is causing what, but we do have a pattern in the British Royal Family.

“Princess Anne was the first royal to be sports personality of the year and the first royal to compete in the Olympics.