Prince Harry and Meghan Markle became parents for the first time on Monday when they welcomed their son, who they named Archie Harrison Mountbatten-Windsor. Now, it’s been revealed that their son’s surname is actually a tribute to Harry’s grandfather, 97 year-old Prince Philip.

Mountbatten is actually Philip’s surname that he wanted to give his children but was not allowed to. In 1952, Philip’s wife Queen Elizabeth ruled that the royal family’s surname would be Windsor rather than Mountbatten, much to her husband’s dismay.

“I’m just a bloody amoeba,” he is said to have yelled at the time when he learned that his own children would not have his surname.

In 1960, the Queen gave Philip a concession when she decided that her direct descendants, other than those with the style of royal highness and the title of prince or princess, would use Mountbatten-Windsor when they needed a surname. That’s why Harry and Meghan gave their son the surname Mountbatten-Windsor.

“I would think the Duke of Edinburgh would be absolutely thrilled with that,” said royal expert Penny Junor. “Archie is a lovely name, but the fact that they’ve chosen to call him Mountbatten-Windsor. Prince Philip was never allowed to call his children by his own surname. I think that’s a really nice tribute to Harry’s grandfather.”

Philip certainly looked delighted in the first photo of him looking adoringly at his new great grandson.  He must be so proud to have his surname handed down to the adorable baby boy!

Congratulations to the royal family on their new addition!