Archduke Stephen, the Grand Duke of Tuscany and the younger son of Emperor Leopold II, became Palatine after the death of Joseph Anton. He was selected as the new ruler due to his close familial connections with the Habsburg monarchy and was formally installed as Palatine in 1859, succeeding Joseph Anton, who passed away in the same year.
The Legacy of Leadership: Unveiling the Story of Archduke Joseph of Austria, Hungary's Penultimate Palatine