During the Second World War, specifically in 1941, his cousin Prince Hubertus of Prussia married the noted society beauty and aristocrat Baroness Maria Anna von Humboldt-Dachroeden (1916 - 2003). The couple, however, divorced in 1943, after her affair with her husband's cousin, Prince Ernst August of Hanover, resulted in the birth of a son, whose biological father wasn't Prince Hubertus, but Prince Ernst August. Marriage between Ernst August and Maria Anna would be out of the question to the Duke and Duchess of Brunswick-Lüneburg, since she was considered of inadequate birth and was also a divorcée. Thus the child, christened Christian Ernst August Hubertus, Freiherr von Humboldt-Dachroeden, was born illegitimate in 1943 and currently is a bank consultant.