_Johannes BEEKMAN ______+
                                            | (1656 - 1751)          
                       _Thomas BEEKMAN _____|
                      | (1689 - 1759)       |
                      |                     |_Aeltje Thomas POPINGA _
                      |                                              
 _Johannes BEEKMAN ___|
| (1723 - 1792)       |
|                     |                      ________________________
|                     |                     |                        
|                     |_____________________|
|                                           |
|                                           |________________________
|                                                                    
|
|--Tjerck BEEKMAN 
|  (1754 - 1791)
|                                            ________________________
|                                           |                        
|                      _____________________|
|                     |                     |
|                     |                     |________________________
|                     |                                              
|_Lidia VAN KEUREN ___|
  (1729 - 1795)       |
                      |                      ________________________
                      |                     |                        
                      |_____________________|
                                            |
                                            |________________________