Click photo to enlarge
FILE - This is a Tuesday, Dec. 25, 2012 file photo of Britain's Queen Elizabeth II's granddaughter Zara Phillips and her husband rugby player Mike Tindall as they arrive for the British royal family's traditional Christmas Day church service in Sandringham, England. Queen Elizabeth II s new great-granddaughter has been named Mia Grace Tindall. The infant is the daughter of Zara Phillips and rugby player Mike Tindall. He tweeted her name Thursday, Jan. 23, 2104.
LONDON—Queen Elizabeth II's new great-granddaughter has been named Mia Grace Tindall.

The 6-day-old infant is the granddaughter of Princess Anne and the daughter of Zara Phillips and rugby player Mike Tindall. He tweeted her name Thursday, and palace officials confirmed it.

Mia Grace is 16th in line to the British throne.

The 32-year-old Phillips is an equestrian who won a silver medal at the 2012 Olympics. Her father is Capt. Mark Phillips.