4 Generation Circle Diagram: |
| Helena Joosma Pedigree Tree Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Gerrit Dekker < Jan Dekker |
| Gerrit Dekker Pedigree Tree Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Helena Joosma < Jan Dekker |
| Jan Dekker Pedigree Tree Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Elisabeth Taijlor < Catharina Elisabeth Dekker |