| REFERENCE | TITLE | NAME | BORN | DIED | TITLE | NAME | BORN | DIED | COMMENTS | |
| 50 | Count | Nicholas N. Demidoff | 1773 | 1828 | Baroness | Elisabeth Alexandrovna Stroganoff | 1779 | 1818 | ||
| 50.1 | Paul N. Demidoff | 1798 | 1840 | Baroness | Aurora Stjernwall | 1808 | 1902 | |||
| 50.11 | Paul Pavlovitch Demidoff (2nd Prince de San Donato) | 1839 | 1885 | Princess | Marie Elimovna Mestcherski | 1844 | 1868 | |||
| 50.11 | Paul Pavlovitch Demidoff (2nd Prince de San Donato) | 1839 | 1885 | Princess | Helene Petrovna Troubetzkoi | 1853 | 1917 | |||
| 50.111 | Elim P. Demidoff (3rd Prince de San Donato) | 1868 | 1943 | Countess | Sophie Hilarionovna Worontzov-Dachkov | 1870 | 1953 | |||
| 50.112 | Nikita P. Demidoff, Prince de San Donato | 1872 | 1874 | |||||||
| 50.113 | Princess | Aurore Demidoff di San Donato | 1873 | 1904 | Prince | Arsen of Serbia | 1859 | 1938 | See 7.J | |
| 50.113 | Princess | Aurore Demidoff di San Donato | 1873 | 1904 | Conte | Palatin Nicola di Noghera | 1875 | 1944 | ||
| 50.1131 | Contessa | Palatine Helene Aurore Noghera | 1898 | 1967 | Gaston Tissot | 1891 | 1945 | |||
| 50.11311 | Humbert Tissot | 1921 | Marguerite Mendes Teske | 1928 | 1992 | |||||
| 50.113111 | Alexandre Tissot Demidoff | 1956 | Catherine Ann Menne | 1959 | ||||||
| 50.1131111 | Simone Marie Tissot Demidoff | 1987 | ||||||||
| 50.1131112 | Peter Alexandre Tissot Demidoff | 1990 | ||||||||
| 50.114 | Anatole P. Demidoff (4th Prince de San Donato) | 1874 | 1941 | Eugenie Podmener | 1871 | 1958 | ||||
| 50.1141 | Helene A. Demidoff, Princesse of San Donato | 1901 | 1970 | |||||||
| 50.1142 | Eugenie A. Demidoff, Princesse of San Donato | 1902 | 1955 | |||||||
| 50.1143 | Aurore A. Demidoff, Princesse of San Donato | 1909 | 1944 | |||||||
| 50.115 | Maria P. Demidoff, Princesse of San Donato | 1877 | 1955 | Prince | Semen S. Abamelik-Lazarev | 1857 | 1916 | |||
| 50.116 | Paul P. Demidoff | 1879 | 1909 | |||||||
| 50.117 | Helene P. Demidoff, Princesse of San Donato | 1884 | 1959 | Comte | Alexandre P. Schouvaloff | 1881 | 1935 | |||
| 50.117 | Helene P. Demidoff, Princesse of San Donato | 1884 | 1959 | Nicolas A. Pavlov | 1866 | 1934 | ||||
| 50.1171 | Comte | Paul A. Schouvaloff | 1903 | 1960 | Anna Ivanovna Raevsky | 1903 | 1992 | |||
| 50.11711 | Comte | Alexander P. Schouvaloff | 1934 | Gillian Baker | 1935 | |||||
| 50.11711 | Comte | Alexander P. Schouvaloff | 1934 | Daria Raoulovna Chorley (née de Mérindol) | 1932 | |||||
| 50.2 | Prince | Anatole Demidoff (1st Prince de San Donato) | 1812 | 1870 | Princess | Mathilde Laetitia Bonaparte | 1820 | 1904 | See 22.122 - Anatole was conferred with the title "Prince of San Donato" by Grand Duke Leopold II of Tuscany in 1840 just weeks before his marriage to Mathilde Laetitia. Anatole physically and mentally abused his wife, even insulting her and hitting her in public. The abuse became so intolerable that in 1847 Tsar Nicholas I ordered him out of the family home and mandated that the he pay Mathilde Laetitia a considerable living allowance. |