Succession to the crown is dictated, first and foremost, by birth order on the royal family tree—although that wasn't always the case

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The late Queen was a much-loved figure in the Royal Family with a popularity rating of 75 percent, according to YouGov figures.

The Romanov Family Tree There are quite a few distinct DNA combinations involved here … German, English, Danish, Greek, as well as Russian (possibly some Polish too). The lower right, …

Both Queen Elizabeth II and Prince Philip, can call Queen Victoria, "Great-Great-Grandmum," which makes them third cousins. Elizabeth II: Elizabeth is the great-granddaughter of King Edward VII, Queen Victoria's son. Philip: Philip's great-grandmother was Princess Alice, Queen Victoria's daughter.