4 Generation Circle Diagram: |
| Johanna van Bavel Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Hendrikus van Opstal < Helena van Opstal |
| Hendrikus van Opstal Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Johanna van Bavel < Helena van Opstal |
| Helena van Opstal Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Adrianus Martens < Adrianus "Adriaan" Martens |