She is a member of one of the most photographed families in the world. But the Queen’s granddaughter, Zara Tindall, has two little-known half-sisters through her father, Captain Mark Phillips.
Zara’s mother, Anne, the Princess Royal married Captain Mark Phillips in 1973 and had two children, Peter, 43, and Zara, 39, Phillips, before they divorced in 1992.
Captain Mark Phillips fathered a daughter, Felicity Tonkin, 35, who was born in August 1985 following a brief extramarital affair with her mother, New Zealand art teacher Heather Tonkin.
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