Do Rh negatives have “royal blood”? Rhesusnegative.net 3 years ago Royalty is a made-up concept. Blood isn’t. However: Is Merovingian ancestry responsible for high O negative blood in British royals? See also: Why are so many British Royals left-handed? Is Haemophilia still present in European Royals? Are most British Royals and U.S. Presidents Rh negative? How did ancient Royals know that they were Rh Negative? Rh Negative Royals: The Romanovs Rh Negative Royals Who were the Merovingian Kings… Haemophilia in European Royalty “Blue Blood”: Is Rhesus Negative Blood Copper Based?