 | Lourens Clasen Koster (1672- ) 
|
| Claas Lourens Koster (1696-1752)  |
 | Saapje Lourens Koster (1700- ) |
| Dirk Lourens Koster (1702- ) |
| Sijbe Lourens Koster (1705- ) |
| Cornelis Lourens Koster (1708- ) |
| Saapje Lourens Koster (1710- ) |
| Janke Lourens Koster (1714- ) |
| Jacob Lourens Koster (1705- )
|
| Dirkien Corneles ( -1751) |
| Christina Jacobs Koster (1730- ) |
| Cornelis Jacobs Koster (1736- ) |
