| Circle Diagram: | 
| Cornelia Medema Pedigree Tree Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Jan Robertus < Frans Robertus < Menno Robertus < Menno Robertus | 
| Hendrika Hillebrands Pedigree Tree Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Menno Robertus < Geertje Cornelia Robertus | 
| Menno Robertus Pedigree Tree Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Hendrika Hillebrands < Geertje Cornelia Robertus Sibling Frans Robertus Menno Robertus | 
| Geertje Cornelia Robertus Pedigree Tree Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Johannes Kroeze | 

 
	

























