| 4 Generation Circle Diagram: | 
| Gerrit Gerlof Jans van Oosten Pedigree Tree Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Elsien Harms Baas < Jan van Oosten < Gerrit Gerlofs van Oosten | 
| Harmanna Medema Pedigree Tree Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Gerrit van Oosten < Gerrit van Oosten | 
| Rezina de Grooth Pedigree Tree Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Gerrit van Oosten < Harmanna van Oosten < Afiena van Oosten | 
| Gerrit van Oosten Pedigree Tree Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Rezina de Grooth < Harmanna van Oosten < Afiena van Oosten | 
| Harmanna van Oosten Pedigree Tree Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Philippe Joseph Vanermaelen Sibling Afiena van Oosten |