4 Generation Circle Diagram: |
| Maria Elisabeth de Widt Pedigree Tree Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Petrus Mertens < Franciscus Mertens < Adrianus Johannes Mertens |
| Petrus Mertens Pedigree Tree Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Maria Elisabeth de Widt < Franciscus Mertens < Adrianus Johannes Mertens |
| Jan Mertens Pedigree Tree Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Sibling Johannes Baptist Mertens |