Kate Middleton was only 19 when she first met Prince William at St. Andrews University in 2001. Young, so young. Which may explain why she gave him the secret nickname back in their college days.
The Mirror has reported that back in the day Middleton used to use His Royal Highness Big Willy as a term of honor. Allow me to stop there for a moment so we can all move on.
Although, Prince Harry reportedly used the name for his speech as Prince Williams' best man at the couple's 2011 wedding reception, guests left the party laughing, and the Duke of Sussex said, according to royal biographer Ingrid Seward, William did not have a romantic bone in his body before Kate's arrival. I knew it was serious when he started cooing down the phone.
The extent to which the mother of three continues to refer to her husband Big Willy is unknown. To be fair, if she prefers to call him in the privacy of one of their mansions when she's feeling apprehensive, more power to her.
Big Willy has several nicknames for his wife, of course. In the past, he has been known to refer to her as babe and darling, but she does occasionally refer to him as Baldy.
One wonders if Queen Elizabeth has known her granddaughter-in-law named her Big Willy. The royal family is continuing to resurrect the tradition by naming their children Tips for 9-year-old Prince George (based on a PG Tips tea), Mignonette or little cutie for 7-year-old Princess Charlotte and Lou-Lou for 4-year-old Prince Louis.
We know Kate Middleton wants to add another baby to their family, but there's no word on whether Big Willy will comply.