... is because their fathers are BROTHERS William and Zara are also COUSINS That is because their father and mother are SIBLINGS Sarah, the Duchess of York, is William’s AUNT Her HUSBAND, the Duke ... the Count of Wessex, is also his UNCLE His WIFE, the Countess of Wessex, is also William’s AUNT Her name is Sophie The Queen is Zara’s GRAND-MOTHER The Duke of Edinburgh is her GRAND-FATHER The ... Family Members: Prince William is Harry’s BROTHER Princess Beatrice and Princess Eugenie are SISTERS The Duke of York is Princess Beatrice’s FATHER Lady Diana was William and Harry’s MOTHER...