Phillips was fifth in line to the throne at birth and remained so until the birth of his cousin Prince William in 1982. His parents were said to have refused offers from his grandmother Queen Elizabeth II that would have led to his being born in the peerage. Phillips was the first legitimate grandchild of a monarch in more than 500 years to be born without a title or courtesy title. Phillips has a younger sister, Zara Tindall (née Phillips; born 1981), and two younger half-sisters, Felicity Wade (née Tonkin; born 1985), the daughter of Mark Phillips and his former mistress Heather Tonkin; and Stephanie Phillips (born 1997), the daughter from his father's second marriage to Sandy Pflueger.