4 Generation Circle Diagram: |
| Willemtje Alberts Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Albert Kolthof < Willem Kolthof |
| Albert Kolthof Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Willemtje Alberts < Willem Kolthof |
| Willem Kolthof Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Harmina Emes Bos < Aaltje Kolthof |