4 Generation Circle Diagram: |
| Dorothea Niekens Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Lambertus "Lanbert" Krouwer < Hendrik Willem Krouwer |
| Lambertus "Lanbert" Krouwer Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Dorothea Niekens < Hendrik Willem Krouwer |
| Hendrik Willem Krouwer Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Johanna van Gils < Lucia Catharina Krouwer |