_Robert IV BRUCE ____+
                                             | (1191 - 1232) m 1219
                        _Robert V BRUCE _____|
                       | (1215 - 1295) m 1240|
                       |                     |_Isobel DUNKELD _____+
                       |                       (1199 - 1251) m 1219
 _Robert VI BRUCE _____|
| (1243 - 1303)        |
|                      |                      _Gilbert of CLARE ___+
|                      |                     | (1180 - 1230)       
|                      |_Isabel of CLARE ____|
|                        (1226 - 1264) m 1240|
|                                            |_Isabel MARSHAL _____+
|                                              (1200 - 1239)       
|
|--Isabel BRUCE 
|  (1272 - 1358)
|                                             _____________________
|                                            |                     
|                       _____________________|
|                      |                     |
|                      |                     |_____________________
|                      |                                           
|_Marjorie of MACDUFF _|
  (1253 - 1292)        |
                       |                      _____________________
                       |                     |                     
                       |_____________________|
                                             |
                                             |_____________________