4 Generation Circle Diagram: |
| Maria Houtman Pedigree Tree Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Gerardus Nikken < Johanna Maria Nikken |
| Gerardus Nikken Pedigree Tree Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Maria Houtman < Johanna Maria Nikken |
| Johanna Maria Nikken Pedigree Tree Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Johannes Ackermans < Johannes Gerardus Josef Ackermans |