4 Generation Circle Diagram: |
| Aaltje Nierop Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Cornelis de Boer < Trijntje de Boer |
| Cornelis de Boer Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Aaltje Nierop < Trijntje de Boer |
| Trijntje de Boer Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Pieter Bakker |