
 1812 - Yes, date unknown
 1812 - Yes, date unknown|  | Robertus Johannes Gaerthe  1812-Yes, date unknown | 
| Robertus Johannes Gaerthe | |
| B: | 16 Sep 1812 | 
| Borkum, Hanover, Prussia, Germany | |
| D: | Yes, date unknown | 
|  | Maria Sophia Martina Helena van Marle  1814-1846 | 
| Maria Sophia Martina Helena van Marle | |
| B: | 2 Mar 1814 | 
| Groningen, Groningen, Nederland | |
| M: | 6 Jul 1845 | 
| Groningen, Groningen, Nederland | |
| D: | 6 Sep 1846 | 
| Groningen, Groningen, Nederland | |