of Saxe Coburg and Gotha (1818-93), childless marriage due to which Ernest’s younger brother Prince Albert ‘s British issue succeeded in that duchy. Ludwig (1822-22) Louis II (1824-58), reigned as Grand Duke 1852-58, deemed mentally unfit to rule. Frederick I (1826-1907), Grand Duke 1858-1907, Regent 1852-58, father of Queen Victoria of Sweden