Prince Harry wasn’t the first royal to struggle with drinking, drugs and depression. Princess Margaret did, too. Prince Harry caused a sensation last week when he revealed that the pressures of royal life had driven him to drink and do drugs. That sounds a lot like another senior royal who, like Prince Harry, lost a parent early in life, had almost zero chance of claiming the throne, and pursued a love interest who wasn’t apropos of royal tradition. She lost her father, King George VI, when she was 22. Her sister Elizabeth became queen. And Margaret fell in love with British Air Force officer Peter Townsend, a divorcée she ultimately broke up with to maintain her royal privileges.