| Derk Julles Slager |
Hendrik Jurriens Streelman (1796 - 1860) |
| Aaltje Jans Peis |
Janna Johannes Zeilinga (1794 - ) |
| Pieter Derks Slager | Julia Streelman |
| b. 21 Nov 1843, Warffum d. 19 Jan 1913, Warffum bur. occ. edu. rel. |
b. 30 Sep 1837, Leens d. bur. occ. edu. rel. |