4 Generation Circle Diagram: |
| Elsien Harms Roghaar
Pedigree Tree Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Andries Jans Blaak < Jan Andries Blaak < Jan Andries Blaak |
| Pietertje Drenth
Pedigree Tree Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Andries Jans Blaak < Jan Andries Blaak < Ike Blaak < Ike Blaak < Abram Jan Blaak |
| Abram Jan Blaak
Pedigree Tree Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Martha de Vries Sibling Jan Andries Blaak Ike Blaak Ike Blaak |