| | Cornelia Barendina Blanc 1884–1957 Pieter Willem Medema 1883–1962 | | |
| | Catharina Houwing 1851–1923 Jacob Johannes Blanc 1850–1887 | | |
| | Martje Gaikes van Polen 1826–1913 Jacob Jacobs Houwing 1824–1884 | | |
| | Trijntje Pieters Schuilenburg 1790–1858 Gaike Jansen van Polen 1787–1875 | | |