4 Generation Circle Diagram: |
| Lena Lakerveld Pedigree Tree Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Dirk Bikker < Peter Bikker |
| Dirk Bikker Pedigree Tree Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Lena Lakerveld < Peter Bikker |
| Peter Bikker Pedigree Tree Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Cornelia Vogel |