_Ferdinand Charles HABSBURG-LORRAINE _+
                                                                                           | (1754 - 1806) m 1771                 
                                                   _Francis IV HABSBURG-ESTE ______________|
                                                  | (1779 - 1846)                          |
                                                  |                                        |_Maria Beatrice of ESTE ______________+
                                                  |                                          (1750 - 1829) m 1771                 
 _Ferdinanad Charles Victor HABSBURG-ESTE ________|
| (1821 - 1849) m 1846                            |
|                                                 |                                         _Victor Emmanuel I of SAVOY __________+
|                                                 |                                        | (1759 - 1824)                        
|                                                 |_Maria Beatrice of SAVOY _______________|
|                                                   (1792 - 1840)                          |
|                                                                                          |_Maria Therese of HABSBURG-ESTE ______+
|                                                                                            (1773 - 1832)                        
|
|--Maria Theresa of HABSBURG-ESTE 
|  (1849 - 1919)
|                                                                                           _Peter Leopold VII HABSBURG-LORRAINE _+
|                                                                                          | (1747 - 1792)                        
|                                                  _Joseph Anton Johann HABSBURG-LORRAINE _|
|                                                 | (1776 - 1847)                          |
|                                                 |                                        |_Maria Luisa of BOURBON ______________+
|                                                 |                                          (1745 - 1792)                        
|_Elisabeth Franziska Maria of HABSBURG-LORRAINE _|
  (1831 - 1903) m 1846                            |
                                                  |                                         _Louis Frederick WÜRTTEMBERG ________+
                                                  |                                        | (1756 - 1817) m 1797                 
                                                  |_Maria Dorothea of WÜRTTEMBERG ________|
                                                    (1797 - 1855)                          |
                                                                                           |_Henriette of NASSAU-WEILBURG ________+
                                                                                             (1780 - 1857) m 1797