4 Generation Circle Diagram: |
| Maria Ockers Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Cornelis Kortland < Theodorus "Dirk" Kortland |
| Cornelis Kortland Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Maria Ockers < Theodorus "Dirk" Kortland |
| Theodorus "Dirk" Kortland Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Johanna van der Kroon |