It’s fair to say that Prince William is a man of many titles. He’s known, for example, as not only His Royal Highness The Duke of Cambridge but also both His Royal Highness The Earl of Strathearn and Baron Carrickfergus. And of course, one day, he’ll also be king. According to his wife, Kate, though, William’s eldest son isn’t nearly so formal when addressing his father. Instead, he has a rather sweet nickname for the prince.
But before William and Kate ever became parents, they first tied the knot at London’s Westminster Abbey. And, as is befitting of a future king, the 2011 wedding was an extremely high-profile event. The ceremony was watched by many, too: in the U.K. alone, more than a third of the population tuned in to see the prince and his bride say their vows.