Karl Frederick
Karl Frederick and Wilhelmine Charlotte married secretly in Bernburg on 1 May 1715 and Karl Frederick immediately tried to have his wife raised to the rank of countess by the Emperor. When Prince Victor Amadeus learned of his son's actions, he wrote to the Emperor on 15 November 1715 to prevent the elevation, and added a codicil to his testament dated 13 July 1716 denying the children of the union any succession rights. The Emperor approved this codicil one year later, on 15 July 1717.