_Baldwin of REDVERS __+
                                            | (1200 - 1216)        
                       _Baldwin of REDVERS _|
                      | (1217 - 1244)       |
                      |                     |_Margaret FITZGEROLD _
                      |                                            
 _Baldwin of REDVERS _|
| (1235 - 1262)       |
|                     |                      _Gilbert of CLARE ____+
|                     |                     | (1180 - 1230)        
|                     |_Amice of CLARE _____|
|                       (1220 - 1287)       |
|                                           |_Isabel MARSHAL ______+
|                                             (1200 - 1239)        
|
|--John of REDVERS 
|  
|                                            _Thomas I SAVOY ______+
|                                           | (1178 - 1232)        
|                      _Thomas II SAVOY ____|
|                     | (1199 - 1258) m 1252|
|                     |                     |_Margaret of GENEVA __
|                     |                       (1179 - 1258)        
|_Margaret of SAVOY __|
                      |
                      |                      ______________________
                      |                     |                      
                      |_Beatrice FIESCHI ___|
                        (.... - 1283) m 1252|
                                            |______________________