_Abraham Samuel WARBURG _+
                                                     | (1798 - 1856)           
                        _Moritz Moses WARBURG _______|
                       | (1838 - 1910)               |
                       |                             |_Sara WARBURG ___________+
                       |                                                       
 _Paul Moritz WARBURG _|
| (1868 - 1932) m 1895 |
|                      |                              _________________________
|                      |                             |                         
|                      |_Charlotte Esther OPPENHEIM _|
|                        (1842 - 1921)               |
|                                                    |_________________________
|                                                                              
|
|--Bettina WARBURG 
|  (1900 - 1990)
|                                                     _________________________
|                                                    |                         
|                       _Solomon LOEB _______________|
|                      | (1828 - 1903) m 1862        |
|                      |                             |_________________________
|                      |                                                       
|_Nina J LOEB _________|
  (1870 - 1945) m 1895 |
                       |                              _________________________
                       |                             |                         
                       |_Betty GALLENBERG ___________|
                         (1834 - 1902) m 1862        |
                                                     |_________________________