The Prince of Wales’ full name is Prince William Arthur Philip Louis—but it was almost something else entirely, had his father, then Prince Charles, gotten his way.

Instead, William’s mother Princess Diana won out, and William was the name chosen for the former Prince and Princess of Wales’ eldest son. Charles, The Mirror reports, wanted Albert or Arthur for his firstborn—but Diana nixed it. In an interview for Andrew Morton’s book Diana: Her True Story—released in 1992 as a biography, but revealed after her death in 1997 that it was really more of an autobiography, as Diana was a contributor to the tell-all—Diana revealed that she actually chose not just William’s name but Prince Harry’s, too (his full name is Prince Henry Charles Albert David—but more on him in a moment).

When asked who picked out the boys’ names, Diana said “I did,” and added “I chose William and Harry, but Charles did the rest [meaning the middle names]. He wanted Albert and Arthur [for the first names], and I said no. Too old!”

Sorry, just trying to imagine William and Harry as Albert and Arthur. Anyway…

Back to Harry: in 2022, while speaking with winners of the WellChild Awards, Harry was talking with a child named Henry when he said “My name is Henry, as well,” he said. “But everyone calls me Harry. I have no idea why.”

The Mirror reports that “Harry is the diminutive form of Henry, a popular nickname that dates back to medieval England,” the outlet reports. “Most monarchs given the name Henry in the past have been nicknamed Harry, including the infamous Henry VIII.”

The more you know!

For the record, Albert and Arthur did end up in the boys’ (well, men now) names after all—if you’ll notice, one of William’s three middle names is Arthur, and one of Harry’s three middle names is Albert. A compromise, if you will, between Charles and Diana—but Diana, you picked well.