Queen Elizabeth II and Prince Philip were known for their longevity and popularity as monarch and consort of the U.K. But did you know that they were actually related before they got married? Read on to find out their relation and learn how they descend from two famous common royal ancestors.

Queen Elizabeth's forthcoming memorial honoring her historic 70-year reign features an unexpected tribute to her 73-year marriage to Prince Philip and her diamond wedding day tiara from 1947.

Lord Foster's winning design includes memories of Prince Philip and a bridge in the shape of a tiara.