_____________________
                                                                 |                     
                          _de Geneville, Geoffrey [-father of-] _|
                         |                                       |
                         |                                       |_____________________
                         |                                                             
 _Geoffrey de Geneville _|
| (.... - 1314) m 1252   |
|                        |                                        _____________________
|                        |                                       |                     
|                        |_______________________________________|
|                                                                |
|                                                                |_____________________
|                                                                                      
|
|--Joan de Geneville 
|  
|                                                                 _Walter de Lacy _____+
|                                                                | (.... - 1240)       
|                         _Gilbert de Lacy ______________________|
|                        | (.... - 1230)                         |
|                        |                                       |_____________________
|                        |                                                             
|_Maud de Lacy __________|
  (.... - 1304) m 1252   |
                         |                                        _Hugh de Bigod ______+
                         |                                       | (.... - 1225)       
                         |_Isabel de Bigod ______________________|
                                                                 |
                                                                 |_Maud Marshal _______+
                                                                   (.... - 1248)