Charles was 4 years old when his mother was crowned Queen of England.
The name Windsor came from a castle.
Windsor Castle has been an off-and-on home for British royalty since William the Conqueror founded it nearly a millennium ago.
Queen Elizabeth II has a long royal lineage.
It goes all the way back through William the Conqueror, the Norman Duke whose conquest of England was an important turning point in European history.
Queen Elizabeth and Prince Philip were cousins through multiple familial ties, in fact. Depending on how you look at it, the husband and wife were either third cousins, or second cousins once removed.
Prince Charles is the longest waiting heir apparent to the throne in British history—and will be the oldest British monarch ever to be crowned.
Elizabeth II wasn't born an heir to the throne.
Elizabeth’s seven decades as Queen are especially notable since she wasn’t born an heir apparent to the throne. And she would have never become Queen if her parents had sons. It was only with the Succession to the Crown Act of 2013 that female heirs to the throne are no longer passed up in the line of succession by their younger brothers.
Buckingham Palace was bombed during World War II—and the royals were there.
Even the royal family wasn’t entirely shielded from the tumult of war: Buckingham Palace was bombed in September 1940. The King wrote about the bombing in his diary.
Tiaras are generally reserved for married royals.
Most unmarried royal women aren’t supposed to wear tiaras. Unless you were born a princess, tiaras are basically the headwear equivalent of a wedding ring, signifying a royal woman’s relationship status.
Prince Charles dated his second wife before meeting his first wife.
Prince Charles famously dated his future second wife, Camilla Shand, now Camilla, Duchess of Cornwall, years before meeting Diana. (Town and country)
Kate and William have their own pseudonyms for traveling incognito.
Similarly, it’s been reported that Kate and William had sometimes traveled under the names Daphne Clark and Danny Collins. Checking into a hotel as Duke and Duchess of Cambridge would presumably invite unwanted attention. (Cosmopolitan)