4 Generation Circle Diagram: |
| Petronella Bouwman Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Johannis van Swam < Sibilia van Zwam |
| Johannis van Swam Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Petronella Bouwman < Sibilia van Zwam |
| Sibilia van Zwam Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Antonie van Erp |