4 Generation Circle Diagram: |
| Catharina Cornelia Buijs Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Adrianus Petrus van Leeuwen < Gerardus Jacobus van Leeuwen |
| Adrianus Petrus van Leeuwen Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Catharina Cornelia Buijs < Gerardus Jacobus van Leeuwen |
| Cornelis Wilhelmus Gerardus "Cees" van Leeuwen Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Johanna Josephina "Jo" van Strien |