| Jacob Klasen Werkman (1777 - 1860) |
Pieter Klaasen Tuun |
| Trijntje Harms |
Jantje Sirks |
| Harm Jacobs Werkman | Grietje Pieters Tuun |
| b. 23 Feb 1800, Warffum d. bur. occ. edu. rel. |
b. 13 Sep 1801, Warffum d. bur. occ. edu. rel. |
| Spouses: 1, 2, 3, 4, 5 | Spouses: 1, 2 |