_Arnold I LOON ____________________+
                                            | (1050 - 1130)                     
                       _Arnold II LOON _____|
                      | (.... - 1146)       |
                      |                     |___________________________________
                      |                                                         
 _Louis I LOON _______|
| (1107 - 1171)       |
|                     |                      ___________________________________
|                     |                     |                                   
|                     |_____________________|
|                                           |
|                                           |___________________________________
|                                                                               
|
|--Gerard LOON 
|  (.... - 1191)
|                                            _Folmar IV METZ ___________________+
|                                           | (.... - 1111)                     
|                      _Folmar V METZ ______|
|                     | (.... - 1145)       |
|                     |                     |___________________________________
|                     |                                                         
|_Agnes of METZ ______|
  (.... - 1175)       |
                      |                      _Albert I of MOHA _________________
                      |                     | (1065 - 1098) m 1096              
                      |_Matilda of MOHA ____|
                        (.... - 1157)       |
                                            |_Ermesinde of ARDENNES-LUXEMBOURG _+
                                              (1075 - 1143) m 1096