4 Generation Circle Diagram: |
| Jeltje Donia Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Willem Koopmans < Lijsbet Koopmans |
| Willem Koopmans Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Jeltje Donia < Lijsbet Koopmans |
| Lijsbet Koopmans Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Marten de Boer < Ieke de Boer |