Queen Elizabeth II became the first monarch to receive one particular distinction in the past 100 years after she gave to Prince Andrew.

In the Amazon Prime documentary “The Queen’s Diamond Decades,” an archived copy of Prince Andrew’s birth announcement in 1960 was shown. The Duke of York was christened Andrew Albert Christian Edward.

Patricia Hodge, the documentary narrator, said that Prince Andrew was the first baby to have been born to a reigning sovereign since 1857, which made him second in line to the British throne. Prince Andrew instantly overtook his older sister Princess Anne.

Queen Victoria gave birth to her youngest child, Princess Beatrice, in 1857, which was over 100 years before Prince Andrew was born. Years later, Prince Andrew and his ex-wife, Sarah Ferguson, decided to name their eldest daughter Princess Beatrice as a tribute to his ancestor.

At that time of his birth, Prince Andrew superseded Princess Anne in the line of succession even though the latter was born before him. But a recent change to the Succession to the Crown Act of 2013 did away with male-preference primogeniture rules.

This means that Princess Charlotte would be positioned before Prince Louis in the line of succession even though she’s a girl because she was born before her younger brother. Unfortunately for Princess Anne, her position didn’t change because the act only passed recently.

Meanwhile, the documentary revealed that Prince Andrew was first introduced to the public by the Queen and Prince Philip 7 months after he was born. The royal couple waited 10 years to have another baby after Princess Anne, and it was evident that they were proud and happy with Prince Andrew’s birth.

Throwback footage shows Prince Charles tucking Prince Andrew using his baby blanket as the doting monarch takes the prince to sit with their family and dogs on a picnic blanket.

Four years after Prince Andrew was born, the Queen gave birth to her youngest son, Prince Edward.

Queen Elizabeth II
Queen Elizabeth II is seen at the Chichester Theatre while visiting West Sussex on Nov. 30, 2017, in Chichester, United Kingdom. Getty Images/Stuart C. Wilson