As Marie Claire reported yesterday, Princess Kate, then Duchess of Cambridge, had to follow a rather interesting rule when she gave birth to Prince George, heir to the throne, 10 years ago yesterday. As reported by the Daily Express, Queen Elizabeth was the first to learn of George's birth and learned of the birth of her great-grandson in a very interesting way.

Royal protocol dictates that the monarch is the first to call after the birth of a future monarch, and the late queen heard the news via a specially encrypted phone call from another future monarch, Prince William, her brand new first father. George was born at 4:24 p.m. in the Lindo Wing of St. Mary's Hospital in London at 8 pounds 6 ounces.

But the late Majesty's involvement in George's childhood did not end there. Because George was heir to the throne, Queen Elizabeth was asked to approve George's name, which was announced two days later as Prince George Alexander Louis.

"After the call to George's great-grandmother [the Queen], William would have had to call several members of the Middleton family to announce the happy news," the Daily Express reported.