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Happy Birthday to Zara Tindall, who turns 36 today. The only daughter of Princess Anne and Mark Phillips, she is the younger sister of Peter Phillips, and the only female-line granddaughter of Queen Elizabeth II. Educated in England and Scotland, Zara is an accomplished equestrian, who won silver in the 2012 London Olympics. In 2011, she married former England Rugby captain Mike Tindall in Edinburgh. The couple have one daughter, Mia, who was born in 2014. Zara is one of the godmothers of Prince George of Cambridge and is 16th in line to the British Throne.