Isabella Augusta Reuß zu Greiz German princess (1752-1824) (1752–1824) Parents Conradine of Reuss-Kostritz Heinrich XI, Prince Reuss of Greiz Children Burgravine Louise Isabelle of Kirchberg Siblings Frederica Reuss of Upper Greiz Heinrich XIII, Prince Reuss of Greiz Heinrich XIV. Reuß zu Greiz Prince Heinrich XV of Reuss-Plauen Partners William George of Sayn-Hachenburg