__
                                            |  
                       _Scott PIERCE _______|
                      | (1866 - 1920)       |
                      |                     |__
                      |                        
 _Marvin PIERCE ______|
| (1893 - 1969) m 1918|
|                     |                      __
|                     |                     |  
|                     |_Mabel M. MARVIN ____|
|                       (1870 - 1920)       |
|                                           |__
|                                              
|
|--Scott PIERCE 
|  (1930 - ....)
|                                            __
|                                           |  
|                      _James E. ROBINSON __|
|                     |                     |
|                     |                     |__
|                     |                        
|_Pauline ROBINSON ___|
  (1896 - 1949) m 1918|
                      |                      __
                      |                     |  
                      |_____________________|
                                            |
                                            |__