When the Duke and Duchess of Cambridge welcomed their third child, three years ago today, they named him Louis Arthur Charles.
Louis is a popular name in the royal family and William and George have it as a middle name, in honour of Prince Charles's mentor Lord Louis Mountbatten, who died in an IRA bombing in 1979.
Charles is a nod to little Louis's grandfather, the Prince of Wales, who said he was delighted to have another baby in the family when he was born.
A statement from Charles and Camilla at the time said: "We are both so pleased at the news. It is a great joy to have another grandchild, the only trouble is I don’t know how I am going to keep up with them." His official title is His Royal Highness Prince Louis of Cambridge, but he
Read more on mirror.co.uk