_Abraham Samuel WARBURG _+
                                                        | (1798 - 1856)           
                           _Moritz Moses WARBURG _______|
                          | (1838 - 1910)               |
                          |                             |_Sara WARBURG ___________+
                          |                                                       
 _Abraham Moritz WARBURG _|
| (1866 - 1929) m 1897    |
|                         |                              _________________________
|                         |                             |                         
|                         |_Charlotte Esther OPPENHEIM _|
|                           (1842 - 1921)               |
|                                                       |_________________________
|                                                                                 
|
|--Marietta WARBURG 
|  (1899 - 1973)
|                                                        _________________________
|                                                       |                         
|                          _Adolph Ferdinand HERTZ _____|
|                         |                             |
|                         |                             |_________________________
|                         |                                                       
|_Mary HERTZ _____________|
   m 1897                 |
                          |                              _________________________
                          |                             |                         
                          |_Maria GOSSLER ______________|
                                                        |
                                                        |_________________________