4 Generation Circle Diagram: |
| Dieltje de Boer Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Johannes Schardam < Klaas Schardam |
| Johannes Schardam Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Dieltje de Boer < Klaas Schardam |
| Klaas Schardam Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Antje Jansdr de Boer |