4 Generation Circle Diagram: |
| Johanna Maria van Gils Pedigree Tree Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Petrus Spijkers < Nicolaas Johannes Maria "Nico" Spijkers |
| Petrus Spijkers Pedigree Tree Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Johanna Maria van Gils < Nicolaas Johannes Maria "Nico" Spijkers |
| Nicolaas Johannes Maria "Nico" Spijkers Pedigree Tree Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Petronella Maria "Pietje" van Seeters |