4 Generation Circle Diagram: |
| Paulina Helena Heerkens Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Johannes den Boer < Adrianus "Janus" den Boer |
| Johannes den Boer Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Paulina Helena Heerkens < Adrianus "Janus" den Boer |
| Adrianus "Janus" den Boer Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Hendrika Petronella "Drika" van Strien |