Mia Tindall's parents on their wedding day
The two names are among the most popular in the UK at the moment with Mia seventh in a couple of top tens for 2013 and Grace in the top twenty. Neither has been used by British royalty before. Mia is a cousin for Savannah and Isla Phillips. Which means that not only is Prince George the only one of the Queen's four great grandchildren with a title, he's the only one with a traditional royal name. Mamma Mia.