This is info I gleaned from a variety of sources including Ottowa County Mi. Clerks office copy of a will belonging to Stoffel Kasslander. He was the husband of Johanna Fonser Kats widow of Cornelis Kats in the Netherlands. He brought Johanna and her children to Zeeland Mi.
Ottowa County Clerks office, birth, marriage and death records from Dirksland, South Netherlands.
It may be possible to confirm family relationships with Cornelis by comparing test results with other carriers of his Y-chromosome or his mother's mitochondrial DNA.
However, there are no known yDNA or mtDNA test-takers in his direct paternal or maternal line.
It is likely that these autosomal DNA test-takers will share DNA with Cornelis: