It was thought at least one family member and one royal would feature in a small list of close family and friends. But few guessed that the couple would include their former private secretary Jamie Lowther-Pinkerton.
CLICK ON PHOTO TO MEET PRINCE GEORGE'S GODPARENTS
The 53-year-old former member of the Irish Guards served as private secretary to the Duke and Duchess and Prince Harry from 2005-2012 and continues to serve part-time as principal private secretary and equerry.
Another of William and Kate's choices honour the memory of his mother – they've asked Julia Samuel, who was a close friend of Princess Diana.
There is also a member of the nobility in the form of the son and heir of the Duke of Westminster – Hugh, Earl Grosvenor. His mother Natalia is William's godmother and was also a friend of Diana's.
The other three godparents are close friends of the couple. Oliver Baker – who went to St Andrews with William and Kate – joins the Duchess' best friend from Marlborough College, Emilia Jardine-Paterson.
Completing the lineup is William van Cutsem, one of William's oldest and dearest friends.