sentences:  His maternal grandparents were Prince Ferdinand of Saxe-Coburg and Gotha and Princess Maria Antonia Koháry.On 28 September 1868, he married Sophie Charlotte Augustine, Duchess in Bavaria (1847–1897) at Possenhofen Castle, near Starnberg.Sophie, the ninth of ten children born to Duke Maximilian Joseph in Bavaria and Princess Ludovika of Bavaria, was a sister of Empress Elisabeth of Austria, Queen Maria Sophie of the Two Sicilies, and Duchess Mathilde Ludovika in Bavaria, the wife of Neapolitan Prince Luis of the Two Sicilies.