As the Prince of Wales celebrates his 42nd birthday today (Friday, 21 June), we can expect to see a number of tributes from the Royal Family and well-wishers around the world. Prince William Arthur Philip Louis was born on at St Mary's Hospital in 1982 to King Charles and Diana, Princess of Wales. He was named after a number of his relatives including Prince Philip, Duke of Edinburgh and his father's uncle, Lord Louis Mountbatten.