LONDON (AP) - Queen Elizabeth II's new great-granddaughter has been named Mia Grace Tindall. The 6-day-old infant is 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, an equestrian who won a silver medal at the 2012 Olympics, is the daughter of the queen's daughter, Princess Anne, and Capt. Mark Phillips.