Brigid Guinness English noblewoman (1920–1995) Parents Gwendolen Guinness, Countess of Iveagh Rupert Guinness, 2nd Earl of Iveagh Children Prince Nicholas of Prussia Prince Rupert of Prussia Princess Antonia of Prussia Prince Andreas of Prussia Princess Victoria Marina of Prussia Siblings Richard Guinness Lady Honor Dorothy Mary Guinness Arthur Onslow Edward Guinness, Viscount Elveden Lady Patricia Florence Susan Guinness Partners Prince Frederick of Prussia Anthony Ness