4 Generation Circle Diagram: |
| Leentje Lekkerkerker Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Buchardus Oskam < Jan Oskam |
| Buchardus Oskam Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Leentje Lekkerkerker < Jan Oskam |
| Marijtje Ruigewaer Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Jan Oskam < Dirk Oskam |
| Jan Oskam Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Marijtje Ruigewaer < Dirk Oskam |
| Geertruij Boonstoppel Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Dirk Oskam < Johannes "Jan" Oskam |
| Dirk Oskam Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Geertruij Boonstoppel < Johannes "Jan" Oskam |
| Johannes "Jan" Oskam Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Jannigje Bons < Cornelis Oskam |