Olfert Fiepkes Koolman 1772–1846 Ubbina Groeneveld 1777–1850 | | |
| | Jan Fiepkes ten Doornkaat Koolman 1773–1851 Antje Doedes Cremer 1778–1810 Jeikelina Jans Cool 1792–1878 | | |
| | Fiepko Olferts (Koolman) 1745–1817 Annegien ten Doornkaat 1749–1795 | | |
Tryntje Olferts Koolman 1757–1814 | | |
Emke Olferts Koolman 1765–1832 Lulof (Luilf) Harms Koolman 1766–1799 | | |
| | Beertje Scholtes 1721–1749 Antje Hindriks Coolman 1736–1815 | | |
