4 Generation Circle Diagram: |
| Gertruida Schoenmaker Pedigree Tree Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Joannes van Bekkum < Christiaan van Bekkum |
| Joannes van Bekkum Pedigree Tree Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Gertruida Schoenmaker < Christiaan van Bekkum |
| Christiaan van Bekkum Pedigree Tree Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree |