John Charles died in 1704 and his widow filed a lawsuit against his brother in the
Aulic Council of the Empire on 3 September 1708. She obtained, on 11 April 1715, full recognition for herself and her children as princely
dynasts. Her brother-in-law Christian II acquiesced in an agreement of 29 October 1716, recognising her children's Palatine titles and succession rights, and increasing their allowance from 6,000 to 50,000
gulden. Nonetheless, other branches of the House of Wittelsbach continued to treat John Charles's children as morganatic, declining to acknowledge their eligibility to inherit the dynasty's patrimonies. In the Wittelsbach family compact of 1771 establishing reciprocal inheritance rights between the Palatine and
Bavarian branches, heirs to their realms were restricted to agnates who were legitimate and "not born of unequal marriage" (
nicht ex dispari matrimonio). However the
Peace of Teschen which concluded the
War of the Bavarian Succession in 1779 finally recognised, in Article 8, the dynastic rights of the descendants of John Charles and Esther Marie von Witzleben, whose grandson,
Wilhelm (1752-1837), received in 1803 the
Duchy of Berg as an appanage from the Elector of Bavaria in compensation for the cession of his territories on the left bank of the Rhine to Napoleon. Berg was summarily re-allocated to Napoleon's brother-in-law,
Joachim Murat, by Bavaria in 1806 in exchange for the
Margraviate of Ansbach, but the title of
Duke in Bavaria, granted by the Holy Roman Emperor to Count Palatine Wilhelm on 16 February 1799 continued to be borne by their
direct descendants and recognised until abolition of the
German Empire in 1918, and remains in use by their
adopted descendants in the 21st century. ==Issue==