4 Generation Circle Diagram: |
| Helena Merkx Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Dirk van den Oever < Fredikrika van den Oever |
| Dirk van den Oever Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Helena Merkx < Fredikrika van den Oever |
| Fredikrika van den Oever Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Hendrikus Herman < Maria Herman |